Articles
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More than 200 results
Article
Semimembranosus-tibial collateral ligament bursa
The semimembranosus-tibial collateral ligament bursa, also known more simply as the semimembranosus bursa, is located at the posteromedial aspect of the knee at the medial aspect of the semimembranosus tendon. When filled with fluid, the semimembranosus-tibial collateral bursa has an unmistakab...
Article
Hepatocystic triangle
The hepatocystic triangle, also known as hepatobiliary triangle or Calot triangle, is a small triangular space at the porta hepatis of surgical importance as it is dissected during cholecystectomy. Its contents, the cystic artery and cystic duct, must be identified before ligation and division t...
Article
Gastric lymph node stations
The gastric lymph node stations were originally divided into 16 groups, as proposed by the Japanese Research Society for Gastric Cancer in 1973.
Gross anatomy
There are three major groups of lymph drainage from the stomach, namely, left gastric, gastroepiploic, and pyloric nodes 4, as shown in...
Article
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
Article
Coracoclavicular ligament
The coracoclavicular (CC) ligament is the major vertical stabilizing factor of the acromioclavicular joint.
Gross anatomy
The coracoclavicular ligament can be divided into two parts: the more medial conoid ligament and the more lateral trapezoid ligament.
conoid ligament
origin: knuckle of ...
Article
Jugulodigastric lymph nodes
The jugulodigastric lymph nodes, also known as subdigastric lymph nodes, are deep cervical nodes located below the posterior belly of the digastric muscle and anterior to the internal jugular vein.
They are located in neck node level IIa and receive lymphatic drainage from the tonsils, pharynx,...
Article
Gyrus rectus
The gyrus rectus, or straight gyrus, is located at the most medial margin of the inferior surface of the frontal lobe 1,2. Its function is unclear but it may be involved in higher cognitive function (e.g. personality) 3.
Gross anatomy
The gyrus rectus is bounded medially by the interhemispheri...
Article
Bulla lamella
The bulla lamella is a structure that, when intact, forms the posterior boundary of the frontal recess. When pneumatized, it forms the ethmoid bulla.
Gross anatomy
It is frequently incomplete and often does not reach the roof of the ethmoid at the skull base. Under these circumstances, the fro...
Article
Area postrema
The area postrema, also known as the chemoreceptor trigger zone is one of the so-called circumventricular organs located on the dorsal inferior surface of the medulla oblongata at the caudal end of the fourth ventricle 1.
The specialized ependymal cells in the area postrema detect toxins in the...
Article
Masticator space
The masticator space is the deep compartment of the head and neck that contains the muscles of mastication.
Gross anatomy
The masticator spaces are paired suprahyoid cervical spaces on each side of the face. Each space is enveloped by the superficial (investing) layer of the deep cervical fasc...
Article
Septal branches of the left anterior descending artery
The septal branches of the left anterior descending artery supply blood flow to the interventricular septum of the heart.
Origin
These are right-sided branches (on axial CTCA) from the left anterior descending artery.
Supply
They provide the main blood supply to the anterior interventricular...
Article
Inferior petrosal sinus
The inferior petrosal sinus is one of the dural venous sinuses. It is often a plexus of venous channels rather than a true sinus and drains blood from the cavernous sinus to the jugular bulb through the jugular foramen (pars nervosa) or sometimes via a vein which passes through the hypoglossal c...
Article
Fallopian canal
The fallopian canal or facial nerve canal refers to a bony canal through which the facial nerve traverses the petrous temporal bone, from the internal acoustic meatus to the stylomastoid foramen.
There are three segments of the canal, corresponding to the segments of the facial nerve they cont...
Article
Orbicularis oculi muscle
The orbicularis oculi muscle is a muscle of facial expression, a ring-like muscle functioning in a number of eyelid movements.
Gross anatomy
The orbicularis oculi muscle is subdivided into orbital, palpebral and lacrimal parts. Each has defined actions.
The orbicularis oculi is secured to th...
Article
Intramammary lymph nodes
The intramammary lymph nodes (IMLN) (a.k.a. intramammary nodes) are lymph nodes within the breast tissue. In breast imaging, they generally fall into BIRADS II lesions 7. They can be solitary or multiple. This article discusses normal (physiological) intramammary lymph nodes.
Epidemiology
Intr...
Article
Lesser sac
The lesser sac or omental bursa is a potential peritoneal space within the abdomen, part of the peritoneal cavity.
Gross anatomy
The lesser sac may be conceptualized as the space posterior to the lesser omentum, between the posterior wall of the stomach and the surface of the peritoneum that ...
Article
Subscapular artery
The subscapular artery is the largest branch of the axillary artery.
Gross anatomy
The subscapular artery originates from the medial surface of the third part of the axillary artery. It passes along the inferior border of the subscapularis muscle and it divides into two branches 1,2:
Thoracod...
Article
Single coronary artery
Single coronary arteries are rare (incidence 0.03-0.07%), with a higher incidence in patients with congenital heart disease (in particular truncus arteriosus and pulmonary atresia). They occur when there is a single ostium arising from the aorta with no ectopic ostia. There is a wide variety of ...
Article
Scaphoid
The scaphoid bone, also known as the os scaphoideum (or historically as the navicular), is the largest of the proximal row of carpal bones and forms the radial portion of the carpal tunnel. It is important for stability and movement at the wrist and may be fractured after a fall onto a hyperexte...
Article
Superficial bursae
Superficial bursae are those bursae that are located superficial to the fibrous fascia. They form in the months to years following birth, as a result of direct pressure or friction 1. An example is the olecranon bursa.
In contrast, deep bursae are located deep in the fibrous fascia.
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