Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

2,859 results found
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Trapezoid ligament

The trapezoid ligament is one of two components forming the coracoclavicular (CC) ligament. The conoid ligament is the other component. Gross anatomy The trapezoid ligament is a broad quadrilateral ligament that is quite thin. Its positioned almost horizontally. It is the anterolateral part of...
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Triangle of Guillain and Mollaret

The triangle of Guillain and Mollaret, also known as the dentatorubro-olivary pathway, has three corners 1: red nucleus inferior olivary nucleus contralateral dentate nucleus Rubro-olivary fibers descend from the parvocellular division of each red nucleus along the central tegmental tracts t...
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Triangle of safety

The triangle of safety is an anatomical region in the axilla that forms a guide as to the safe position for intercostal catheter (ICC) placement. With the arm abducted, the apex is the axilla, and the triangle is formed by the: lateral border of the pectoralis major anteriorly lateral border o...
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Triangles of the neck

The triangles of the neck are surgically focused divisions of the neck, first described from early dissection-based anatomical studies which predated cross-sectional anatomical description based on cross-sectional imaging (see deep spaces of the neck). The neck can be divided into anterior and ...
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Triangular fibrocartilage complex

The triangular fibrocartilage complex (TFCC) is a complex structure that is a major contributor to the stability of the wrist.  Gross anatomy The TFCC is located on the ulnar aspect of the wrist joint between the ulna and the lunate and triquetrum of the proximal carpal row. It has an elongate...
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Triangular ligament

The triangular ligaments grouped with the ulnar collateral ligament and meniscal homologue, comprise the ulnar-sided components of the triangular fibrocartilage complex (TFCC). The triangular ligament attaches triangular fibrocartilage to the ulnar tip and fovea. The triangular ligament is comp...
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Triangular space (disambiguation)

The triangular space may refer to: medial (upper) triangular space in the axilla lateral (lower) triangular space in the axilla
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Triangular space of cruciate ligaments

Triangular space of cruciate ligaments (TSC) is defined as the potential extrasynovial space between anterior and posterior cruciate ligaments of the knee joint. Gross anatomy Boundaries anteriorly: anterior cruciate ligament posteriorly: posterior cruciate ligament inferiorly: tibial plate...
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Tributaries of the inferior vena cava (mnemonic)

A useful mnemonic to remember the tributaries of the inferior vena cava is: I Like To Rise So High Mnemonic I: common iliac veins L: lumbar veins T: right testicular (gonadal) vein R: renal veins S: suprarenal veins H: hepatic veins
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Triceps brachii muscle

The triceps brachii muscle, often referred to simply as the triceps, is a three-headed muscle in the posterior compartment of the arm. Summary origin long head: infraglenoid tubercle of the scapula medial head: posterior humerus inferior to the radial groove, both intermuscular septa latera...
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Triceps coxae

The triceps coxae is the tricipital (three headed) collection of 3 muscles in the posterior hip which act together on the hip, primarily to laterally rotate the extended thigh. It comprises (in order from superior to inferior) the superior gemellus, obturator internus and inferior gemellus muscl...
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Triceps surae

Triceps surae is another term used for the calf muscles, more specifically two of the three muscles of the superficial posterior compartment of the leg: medial and lateral heads of the gastrocnemius muscle soleus muscle The group of muscles are innervated by the tibial nerve and form the Achi...
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Tricuspid valve

The tricuspid valve (TV) is one of the four cardiac valves. It is one of the two atrioventricular valves (AVs) and allows blood to flow from the right atrium to the right ventricle. It opens during diastole and closes during systole. The valve has anterior, posterior and septal leaflets (cusps),...
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Trigeminal ganglion

The trigeminal ganglion, also known as the Gasser, Gasserian or semilunar ganglion, is the large crescent-shaped sensoryganglion of the trigeminal nerve located in the trigeminal cave (Meckel cave) surrounded by cerebrospinal fluid. The ganglion contains the cell bodies of the sensory root of t...
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Trigeminal nerve

The trigeminal nerve is the fifth cranial nerve and its primary role is relaying sensory information from the face and head, although it does provide motor control to the muscles of mastication. It is both large and complicated and has multiple brainstem nuclei (sensory and motor) as well as man...
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Trigeminal nerve branches (mnemonic)

A mnemonic for remembering the names of the skull foramina that the division of the trigeminal nerve (CN V) pass through is: Standing Room Only Mnemonic standing: superior orbital fissure (ophthalmic division of trigeminal nerve) room: foramen rotundum (maxillary division of trigeminal nerve...
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Trigone of the lateral ventricle

The trigone of the lateral ventricle is an area of the lateral ventricle at the confluence of the occipital and temporal horns. It refers either to the three-dimensional space at the transition between the body of the lateral ventricle and the occipital and temporal horns, in which case it is al...
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Triquetrum

The triquetrum (also known as os triquetrum or triangular bone) is one of the carpal bones and forms part of the proximal carpal row. Gross anatomy Osteology The triquetrum is wedge-shaped carpal bone located between the lunate and the pisiform. It has an oval facet for articulation with the ...
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Triradiate cartilage

The triradiate cartilage is the Y- shaped epiphyseal plate that occurs at the junction where the ischium, ilium, and pubis meet in the skeletally immature skeleton.   The vertical component of the "Y" is the meeting of the ischium and pubic bone. The anterior arm is the junction of the ilium an...
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Triscaphe joint

The triscaphe joint is the shared joint between the scaphoid, trapezium and trapezoid bones in the wrist. This joint is also referred to by its much longer name, the scaphotrapeziotrapezoid (STT) joint. Related pathology This joint may be fused as an alternative to scapholunate fusion in treat...
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Trochlea (disambiguation)

Trochlea (sing., pl. trochleae) is a general term that refers to an anatomic structure that resembles the grooved part of a pulley system: Trochlea have been described in: orbit: trochlea of the superior oblique muscle trochlear nerve (CN IV) humeral trochlea femoral trochlea trochlea of ...
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Trochlear nerve

The trochlear nerve is the fourth cranial nerve and is the motor nerve of the superior oblique muscle of the eye.  It can be divided into four parts: nucleus and an intraparenchymal portion cisternal portion cavernous sinus portion orbital portion Gross anatomy Nucleus and intraparenchy...
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True vocal cords

The true vocal cords are the thickened, free edge of the cricovocal membrane, the cricovocal ligament, lined by mucous membrane 1. Together they form part of the glottis, the V-shaped aperture through which air passes. Their primary role is in phonation where vibration of the adducted vocal cord...
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Tuber cinereum

Tuber cinereum is a hollow eminence of gray matter. It is a part of the hypothalamus. Gross anatomy It is located between mammillary bodies and optic chiasm. Devoid of the blood brain barrier, it normally enhances after contrast administration. Relations It is continuous: laterally: with an...
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Tuberculum sellae

The tuberculum sellae is the ridged process of the sphenoid bone which forms the anterior wall of the sella turcica. Gross anatomy Relations The tuberculum sellae forms the anterior wall of the sella turcica, which houses the pituitary gland. It is an elongated ridge located immediately poste...
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Tunica albuginea (testis)

The tunica albuginea (TA) forms the fibrous covering of the testis and is itself covered by the serous layer, the tunica vaginalis. The covering is total, except for at the point of attachment of the epididymis, and a small defect posteriorly where the spermatic cord vessels enter and leave the ...
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Tunica (disambiguation)

Tunica is a word used in anatomy to refer to a type of covering.  tunica adventitia (also known as tunica externa) tunica albuginea tunica albuginea (clitoris) tunica albuginea (ovary) tunica albuginea (penis) tunica albuginea (testis) tunica intima tunica media tunica vaginalis tunica...
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Tunica vaginalis (testis)

The tunica vaginalis (TV) represents the investing serosal covering of the testis. It forms as the embryological testis descends and passes out through the superficial inguinal ring carrying its abdominal peritoneal covering with it. The tunica vaginalis is said to consist of two layers, the pa...
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Twelfth rib

The twelfth rib is an atypical rib. It is the shortest rib, and one of two floating ribs. Gross anatomy Osteology The 12th rib has a single facet on its head for articulation with the T12 vertebra. It has a short neck and no tubercle. It also lacks a costal groove and angle. internal surface ...
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Tympanic annulus

The tympanic annulus is the thickened edge of the pars tensa of the tympanic membrane, anchoring it in the tympanic sulcus 3. Gross anatomy The tympanic annulus is formed by a fibrocartilaginous thickening of the edge of the pars tensa and has a horseshoe-shaped configuration. It is deficient ...
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Tympanic membrane

The tympanic membrane is a thin membrane that separates the external ear from the middle ear. It acts to transmit sound waves from air in the external auditory canal (EAC) to the ossicles of the middle ear. Gross anatomy The tympanic membrane is shaped like a flat cone pointing into the middle...
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Tympanic part of temporal bone

The tympanic part of the temporal bone is situated inferiorly to the squamous part and anteriorly to the mastoid part. The tympanic part surrounds the external auditory meatus, forming the anterior wall, floor and some of the posterior wall of the bony external acoustic meatus. The lateral bord...
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Tympanomastoid fissure

The tympanomastoid fissure is one of the intrinsic fissures of the temporal bone, located parallel and posterior to the bony external auditory canal, dividing the tympanic part of the temporal bone and mastoid process. Its radiological significance is as a fracture mimic (pseudofracture) 1. Its ...
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Tympanosquamous fissure

The tympanosquamous fissure separates the tympanic part of the temporal bone from the squamous part. It is parallel and anterior to the bony external auditory canal and divides medially into the petrotympanic fissure and petrosquamous fissure.
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Typical cervical vertebrae

Of the seven cervical vertebrae, C3 through C6 have typical anatomy, while C7 looks very similar. C1 (atlas) and C2 (axis) have very distinct anatomical features. For a basic anatomic description of the structure a generic vertebra, see vertebrae. Gross anatomy small, oval-shaped vertebral bod...
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Typical ribs

Typical ribs are those numbered 2 to 10 with ribs 1, 11 and 12 considered atypical. Gross anatomy A typical rib is long and flat. They contain a: head neck tubercle shaft angle Ribs have a rounded, smooth superior border. The inferior border is thin and sharp.  Osteology Head The head...
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Typical thoracic vertebrae

Given the twelve thoracic vertebrae are largely similar, most are considered typical thoracic vertebrae with the exceptions T1 and T9 to T12. For a basic anatomic description of the structure of typical vertebrae, see vertebrae. Gross anatomy Relative to cervical and lumbar vertebrae, thoracic...
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Ulna

The ulna (plural: ulnae) is one of the two long bones of the forearm,  located medially in the supinated anatomic position. It has a larger proximal end and tapers to a smaller distal end (opposite to the radius).  Gross anatomy Osteology Prominent features of the ulna include: proximal: ole...
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Ulnar artery

The ulnar artery is a terminal branch of the brachial artery, arising at the proximal aspect of the forearm. Along with the radial artery, it is one of the main arteries of the forearm.  Summary origin: terminal branch of the brachial artery location: inferior aspect of the cubital fossa sup...
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Ulnar nerve

The ulnar nerve is one of the terminal branches of the brachial plexus and has motor and sensory supply to the forearm and hand. Gross anatomy Origin The ulnar nerve originates as a terminal branch of the medial cord of the brachial plexus with nerve root fibers from C8-T1. Course Arm In t...
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Ulnar vein

The ulnar vein is one of the two major deep veins of the forearm, along with the radial vein. As is usual in the upper and lower limbs, there are often two veins (venae comitantes) that run on either side of the ulnar artery and anastomose freely with each other. It forms in the hand from the d...
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Ulnomeniscal homologue

The ulnomeniscal homologue (UMH) is an obliquely oriented, fibrocartilaginous structure, that forms part of the ulnar collateral ligament complex (ULC) of the wrist. Gross anatomy The UMH is located between the ulnar styloid process and the triquetrum. It adheres to the ulnar joint capsule and...
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Umbilical artery

The umbilical artery gives rise to both a nonfunctional remnant of the fetal circulation and an active vessel giving supply to the bladder. In the adult, the obliterated area of the vessel is identifiable as the medial umbilical ligament and the patent segment is the superior vesical artery. Su...
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Umbilical cord

The umbilical cord is a fetal organ that connects the placenta to the developing fetus and is a vital passage for nutrients, oxygen and waste products to and from the fetus.  The umbilical cord inserts into the center of the placental bulk and into the fetus at the umbilicus. Variations in inse...
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Umbilical folds

The umbilical folds are a series of 5 folds of parietal peritoneum on the deep surface of the anterior abdominal wall and consist of: a single midline median umbilical fold, bilateral medial umbilical folds, and bilateral lateral umbilical folds
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Umbilical vein

The umbilical vein is the conduit for blood returning from the placenta to the fetus until it involutes soon after birth. The umbilical vein arises from multiple tributaries within the placenta and enters the umbilical cord, along with the (usually) paired umbilical arteries. Once it enters the...
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Umbilicus

The umbilicus is the fibrous remnant of the foetal attachment of the umbilical cord after birth. All layers of the anterior abdominal wall fuse at the umbilical ring, a small round defect in the linea alba located just inferior to the midpoint between the xiphoid process of the sternum and the p...
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Uncinate fasciculus

The uncinate fasciculus is a white matter tract that connects the uncus (Brodmann area 35), the anterior temporal areas (temporal pole; Brodmann area 38), the amygdala and the hippocampal gyrus (Brodmann areas 36 and 30) with areas of the frontal lobe (polar and orbital cortex); runs - forming a...
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Uncinate process

The uncinate process of the ethmoid bone is a thin hook-like osseous structure of the wall of the lateral nasal cavity. Gross anatomy Together with the ethmoid bulla, it forms the boundaries of the hiatus semilunaris and ethmoid infundibulum. The course of the free edge of the uncinate proces...
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Uncinate process of the cervical spine

The uncinate process of the cervical spine is a hook-shaped process found bilaterally on the superolateral margin of the cervical vertebral bodies of C3-C7. The uncinate processes are more anteriorly positioned in the upper cervical spine and more posteriorly location in the lower cervical spin...
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Uncovertebral joint

Uncovertebral joints, also called Luschka’s joints, are seen bilaterally between adjacent cervical vertebrae, identified by the cat ear shaped uncinate processes of the C3-7 vertebrae (C1 and C2 have no uncinate processes). Gross anatomy Articulations The articulation forms between the uncina...
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Uncus

The uncus (plural: unci) is the innermost part of the anterior parahippocampal gyrus, part of the mesial temporal lobe.  Gross anatomy The uncus is the most anterior portion of the medial parahippocampal gyrus. It belongs to the limbic system. Housing the primary olfactory cortex, it is part o...
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Unfused spinous process

Unfused spinous process, which is really failure of fusion of the neural arch, is a relatively common anatomical variant and is part of the spectrum of spina bifida occulta.  This should be differentiated from accessory ossicles of the spinous process, which appear after non-fusion of the secon...
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Unfused sternal body segments

Fusion of sternal body segments is usually complete by 25 years of age. But non-fusion of sternal body segments can be seen in older age group.
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Unicornuate uterus

A unicornuate uterus or unicornis unicollis is a type of Müllerian duct anomaly (class II) characterized by a banana-shaped uterus usually draining into a single Fallopian tube. Epidemiology This type can account for ~10% (range 6-13%) of uterine anomalies and infertility is seen in ~12.5% (ra...
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Upper limb anatomy

Upper limb anatomy encompasses the anatomy of the shoulder, arm, elbow, forearm, wrist and hand. This anatomy section promotes the use of the Terminologia Anatomica, the international standard of anatomical nomenclature. 
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Upper subscapular nerve

The upper subscapular nerve, also known as the short or superior subscapular nerve, arises from the posterior cord of the brachial plexus and supplies the subscapularis muscle. Gross anatomy Origin The upper subscapular nerve branches from the posterior cord of the brachial plexus with fibers...
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Upper T sign

The upper T sign is one of the features useful in identifying the central sulcus of the cerebral cortex on cross-sectional imaging. It relies on identifying the superior frontal sulcus which intersects the precentral sulcus in a "T" junction, thus defining the precentral gyrus. The central sulc...
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Urachus

The urachus is the fibrous vestigial remnant of the fetal allantois. The lumen of the urachus usually obliterates after birth and it becomes the median umbilical ligament, a midline linear fibrous fold of parietal peritoneum, extending from the apex of the bladder to the umbilicus. It is locate...
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Ureter

The ureter is a paired fibromuscular tube that conveys urine from the kidneys in the abdomen to the bladder in the pelvis.  Gross anatomy The ureter is 25-30 cm long and has three parts: abdominal ureter: from the renal pelvis to the pelvic brim pelvic ureter: from the pelvic brim to the bla...
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Ureteral duplication

Ureteral duplication is the most common congenital abnormality associated with the urinary tract, and occurs in ~1% of the population. Gross anatomy Duplication can occur unilaterally or bilaterally, and may be partial or complete: partially duplicated ureters fuse into a single ureter proxim...
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Ureteric bud

The ureteric bud (also known as the metanephrogenic diverticulum) is a protrusion of the mesonephric duct that appears during the embryological development of urogenital organs. It will eventually form the urinary collecting system (i.e. collecting tubes, calyces, renal pelvis, ureter) of the ki...
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Urethra

The urethra is the terminal segment of the genitourinary system. Because of vastly different anatomy between the sexes, male and female urethras are discussed separately: female urethra male urethra
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Urinary bladder

The urinary bladder (more commonly just called the bladder) is a distal part of the urinary tract and is an extraperitoneal structure located in the true pelvis. Its primary function is as a reservoir for urine.  Gross anatomy The bladder has a triangular shape with a posterior base, an anteri...
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Urinary system

The urinary system consists of the kidneys, ureter, bladder and urethra. With the exception of the urethra, this is the same in both males and females.  It spans the abdomen and pelvis, from the upper abdomen to the extreme pelvis, being inextricably linked with the genital system. The urinary ...
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Urogenital triangle

The urogenital triangle forms the anterior half of the diamond-shaped perineum. The triangle's corners are defined by the pubis symphysis anteriorly and the ischial tuberosities anterolaterally. The anterolateral borders are the ischiopubic rami and the posterior border is the transverse perinea...
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U sign (central sulcus)

The U sign denotes the characteristic U-shaped appearance of the subcentral gyrus which surrounds the inferolateral end of the central sulcus and abuts the lateral (Sylvian) fissure. It has been found, at least in one study, to be the most reliable anatomical feature to identify the central sulc...
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Uterine agenesis

Uterine agenesis is the extreme of Mullerian duct anomalies (Class I) where there is a complete absence of uterine tissue above the vagina.  Epidemiology The uterine agenesis-hypoplasia spectrum accounts for ~10-15% of all Müllerian duct anomalies. Clinical presentation Clinical presentation...
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Uterine artery

The uterine artery is seen bilaterally and is a branch of the anterior division of the internal iliac artery. Gross anatomy Course It runs medially in the pelvis, within the base of the broad ligament, to the outer surface of the uterus. From lateral to medial it has a descending, transverse ...
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Uterine duplication anomalies

Uterine duplication anomalies are a group of Müllerian duct anomalies where fusion of the Müllerian duct associated structures fail to some degree: uterus didelphys: class III bicornuate uterus: class IV (second commonest duplication anomaly) septate uterus: class V (commonest duplication ano...
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Uterine tube

The uterine tube, also known as the Fallopian tube or less commonly the oviduct, is a paired hollow tube that bridges between each ovary and the uterus and functions to convey the mature ovum from the former to the latter. If conception occurs, it normally does so within the tube. It can be affe...
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Uterine venous plexus

The uterine venous plexus is a network of veins surrounding the uterus and has extensive anastomoses with the vaginal venous plexus inferiorly and ovarian venous plexuses laterally. Gross anatomy The uterine venous plexus lies along the lateral aspects and superior angles of the uterus within ...
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Uterosacral ligament

The paired uterosacral ligaments are one of the supporting structures of the uterus. Uterosacral ligaments are not infrequently affected in cases of deep infiltrating endometriosis. Gross anatomy The paired uterosacral ligaments are extraperitoneal structures which extend posteriorly from the ...
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Uterus

The uterus is a hollow, thick-walled, muscular organ of the female reproductive tract that lies in the lesser pelvis.   Gross anatomy The uterus has an inverted pear shape. In the adult, it measures about 7.5 cm in length, 5 cm wide at its upper part, and nearly 2.5 cm in thickness. It weighs ...
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Utricle (disambiguation)

The utricle may refer to: utricle of the inner ear utricle of the prostatic urethra
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Utricle (ear)

The utricle is a small membranous sac (part of the membranous labyrinth) and paired with the saccule lies within the vestibule of the inner ear. It has an important role in orientation and static balance, particularly in horizontal tilt. Gross anatomy The vestibule is located within the bony l...
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Uvea

The uvea (plural: uveas), also called the uveal layer or vascular tunic, is the middle of the three layers that make up the eye. It is the pigmented layer and its main function is of nutrition and gas exchange. It sits between the retina (innermost layer) and sclera.  It is traditionally split ...
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Vagina

The vagina is a midline fibromuscular tubular organ positioned in the female perineum extending superiorly from the vulva, to the cervix and uterus in the pelvis.  Gross anatomy The vagina is 8-10 cm in length, extending posterosuperior from the vestibule through the urogenital diaphragm to th...
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Vaginal artery

The vaginal artery is a branch of the anterior division of the internal iliac artery, and should not to be mistaken with the vaginal branch of the uterine artery. It is often considered to be a homolog of the inferior vesical artery, which is present only in males. Summary origin: anterior div...
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Vaginal opening

The vaginal opening, is also known as the introitus (plural: introituses), vaginal orifice, or ostium vaginae (plural: ostia vaginarum) (TA) . Gross anatomy The entrance to the vagina lies in the vestibule of the vulva in the median plane. It has an anteroposterior orientation and is partially...
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Vagus nerve

The vagus nerve is the tenth (X) cranial nerve and provides the bulk of the parasympathetic input to the gastrointestinal system and to the heart. It is a complex mixed sensory, motor and parasympathetic nerve.  Gross anatomy Central connections The vagus nerve arises as multiple rootlets at ...
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Vallecula

The epiglottic valleculae are paired depressions in the oropharynx located anterior to the epiglottis and posterior to the base of tongue.  They are located between the lateral glossoepiglottic folds and the median glossoepiglottic fold. Etymology Vallecula is Latin for "small valley", a combi...
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Valveless vein

The valveless veins are veins that lack venous valves. Most veins contain valves (known as the valvula venosa in the TA) to prevent backflow, i.e. ensuring that blood flow is always towards the heart 1. Recent evidence shows that veins that were previously thought to be valveless, are now known...
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Valvulae conniventes

The valvulae conniventes, also known as Kerckring folds/valves, plicae circulares or just small bowel folds, are the mucosal folds of the small intestine, starting from the second part of the duodenum, they are large and thick at the jejunum and considerably decrease in size distally in the ileu...
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Variant anatomy of the aortic arch

Variant anatomy of the aortic arch occurs when there is failure of normal aortic development. It results in a number of heterogenous anomalies of the aorta and its branch vessels. Gross anatomy Normally, the aorta ascends in the superior mediastinum to the level of the sternal notch before arc...
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Variant hepatic arterial anatomy

Variation in hepatic arterial anatomy is seen in 40-45% of people. Classic branching of the common hepatic artery from the celiac artery, and the proper hepatic artery into right and left hepatic arteries to supply the entire liver, is seen in 55-60% of the population.  Terminology An accessor...
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Variation in placental morphology

There can be several variations in placental morphology. These include: single lobed discoid placenta (single disc): most common scenario bilobed placenta: two near equal size lobes succenturiate lobe(s): one of more smaller accessory lobes circumvallate placenta: rolled placental edges with...
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Vascular anatomical variants

Vascular anatomical variants are common: aortic variants thoracic aorta ascending aorta aortic arch descending aorta abdominal SVC and IVC - caval variants intracranial arteries - variants
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Vastus intermedius muscle

The vastus intermedius muscle is one of the four quadriceps muscles in the anterior compartment of the thigh. The others are the vastus medialis, the vastus lateralis, and the rectus femoris. Summary origin: upper two-thirds of the anterior and lateral surfaces of the femur insertion quadric...
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Vastus lateralis muscle

The vastus lateralis is largest of the four quadriceps muscles in the anterior compartment of the thigh. The others are the rectus femoris, the vastus intermedius, and the vastus medialis. Summary origin femur lateral part of intertrochanteric line margin of greater trochanter lateral mar...
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Vastus medialis muscle

The vastus medialis muscle is one of the four quadriceps muscles in the anterior compartment of the thigh. The others are the rectus femoris, the vastus intermedius, and the vastus lateralis. Summary origin femur medial part of intertrochanteric line pectineal line medial lip of the linea ...
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Vein of Galen

The vein of Galen, also known as the great cerebral vein or great vein of Galen, is a short trunk formed by the union of the two internal cerebral veins and basal veins of Rosenthal. It lies in the quadrigeminal cistern. It curves backward and upward around the posterior border of the splenium o...
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Vein of Labbé

The vein of Labbé, also known as inferior anastomotic vein, is part of the superficial venous system of the brain.  The vein of Labbé is the largest channel that crosses the temporal lobe between the Sylvian fissure and the transverse sinus and connects the superficial middle cerebral vein to t...

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