Items tagged “anatomy”

165 results found
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Frontomaxillary suture

The frontomaxillary suture is the suture where the nasal process of frontal bone joins the frontal process of the maxilla.
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Frontoethmoidal suture

The frontoethmoidal suture is a short cranial suture located in the anterior cranial fossa, between the orbital process of frontal and orbital plate of ethmoid bones. It forms part of the medial wall of the orbit. The anterior and posterior ethmoidal foramina are seen just superior to it, throu...
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Posterior humeral circumflex artery

The posterior humeral circumflex artery is a vessel arising from the axillary artery at the proximal part of the arm. Summary origin: branch of the axillary artery at the proximal part of the arm 1 location: proximal arm supply: glenohumeral joint, teres major and minor, and deltoid 1 main ...
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Intercristal line

The intercristal line (also known as Jacoby’s Line or Tuffier’s Line) is a horizontal line drawn across the highest points of both the iliac crests in an anteroposterior (AP) lumbar radiograph 1,2. The intercristal line most often intersects the body of L4 or its inferior endplate in men and th...
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Pterygoid processes

The pterygoid processes or pterygoid plates are paired posteroinferior projections of the sphenoid bone. Gross anatomy Each pterygoid process projects inferiorly from the junction of the body and greater wing of the sphenoid bone and bifurcates into a medial pterygoid plate and a lateral ptery...
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Platysma muscle

The platysma muscle (a.k.a. the shaving muscle) is a broad superficial fascial sheet of thin muscle covering the superior anterior chest, anterior and anterolateral neck and anterolateral mandibular region. Gross anatomy The muscle consists of three parts: pars mandibularis, pars labialis and ...
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Sphenozygomatic suture

The sphenozygomatic suture is one of the paired cranial sutures formed by the junction of the sphenoid and zygomatic bones. Medially, it forms part of the lateral wall of the orbit. Laterally it forms part of the anterior temporal fossa 1. 
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Pharyngeal plexus

The pharyngeal plexus lies on the posterolateral wall of the pharynx, mainly over the middle pharyngeal constrictor and is the main motor and sensory nerve supply to the muscles of the pharynx and soft palate and acts to coordinate swallowing and speech 1-7. Summary location: within the extern...
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Rotator crescent

The rotator crescent is the crescent-shaped, thin area of the distal supraspinatus and infraspinatus tendons, which are two major rotator cuff tendons. On its medial border is a thick fibrous reinforcement called the rotator cable. It is hypothesized that the rotator crescent is shielded from m...
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Paracondylar process

The paracondylar process, also known as the paraoccipital, paramastoid, parajugular or estiloid process, is a rare anatomical variant of the occipital where a bony exostosis extends caudally from the paracondylar region (lateral to the native occipital condyles), typically articulating with the ...
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Palatine bone

The palatine bones are paired L-shaped bones joined at the midline. They form the hard palate with the maxillary bones. They also form part of the floor of the nasal cavity (the hard palate separates the oral cavity from the nasal cavity).  Gross anatomy The palatine bones are located at the b...
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Third condyle

The third condyle, also known as condylus tertius or the median occipital condyle, is a rare anatomical variant of the occipital bone that may mimic an occipital condyle fracture. It is part of the spectrum of occipital vertebrae. Epidemiology The third condyle is a rare variant, found in appr...
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Terminologia Anatomica

Terminologia Anatomica (TA) is the global standard for correct gross anatomical nomenclature in humans 1. The second edition was published by the Federative International Programme for Anatomical Terminology in 2019 4.  The standard anatomical terms are from Latin and Ancient Greek roots. The E...
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Hypotympanum

The hypotympanum refers to the portion of the tympanic cavity lying inferior to the level of the inferior margin of the external acoustic canal (EAC). Gross anatomy The hypotympanum is the smallest of the three compartments that make up the tympanic cavity and is a shallow depression in the fl...
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Fornix (eye)

The fornix conjunctiva is loose soft tissue lying at the junction between the palpebral conjunctiva (covering the inner surface of the eyelid) and the bulbar conjunctiva (covering the globe). Each eye has two fornices, the superior and inferior fornices. The fornix permits freedom of movement of...
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Fundus (disambiguation)

Fundus (plural: fundi) is used as an anatomical term for many organs and is generally used in the sense of a part that is the lower part or is distant from the main aperture: fundus (stomach) fundus (gallbladder) fundus (uterus) fundus (eye) fundus (urinary bladder) fundus (internal acoust...
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Detrusor muscle

The detrusor muscle (or detrusor urinae muscle)is the smooth muscle component of the urinary bladder and facilitates contraction of the bladder wall during micturition. Gross anatomy Forms the smooth muscle component of the bladder wall. The urothelial lining overlies it within the bladder cav...
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Cornea

The cornea forms the fibrous layer of the anterior portion of the eye. It functions to refract light entering the eye.  Summary location: anterior one-sixth of the eyeball blood supply: avascular innervation: long ciliary nerves  relations: continuous with the sclera posteriorly and covered...
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Supraorbital vein

The supraorbital vein drains the anterior part of the scalp and forehead 1. The supraorbital vein drains into the superior ophthalmic vein and the angular vein at the root of the nose 2. Gross anatomy The supraorbital vein drains the forehead venous plexus and descends along with the supraorbi...
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Lingual vein

The lingual vein is formed by the sublingual, deep lingual, and dorsal lingual veins 1. It is a paired vein draining the tongue. Gross anatomy The lingual veins accompany the lingual artery between the hyoglossus and genioglossus and enters the internal jugular vein near the greater horn of th...