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List of articles in "Anatomical Structure" category - Page 320

Anconeus muscle

The anconeus muscle (or anconaeus/anconæus) is a small muscle on the posterior aspect of the elbow joint.Some consider anconeus to be a continuation of the triceps brachii muscle. Some sources […]


Teres major muscle

The teres major muscle (Latin teres meaning ’rounded’) is a muscle of the upper limb and one of seven scapulohumeral muscles. It is a thick but somewhat flattened muscle innervated […]


Posterior communicating artery

In human anatomy the left and right posterior communicating arteries are arteries at the base of the brain that form part of the circle of Willis. Each posterior communicating artery […]


Subscapularis muscle

The subscapularis is a large triangular muscle which fills the subscapular fossa and inserts into the lesser tubercle of the humerus and the front of the capsule of the shoulder-joint.


Subclavius muscle

The subclavius is a small triangular muscle placed between the clavicle and the first rib.Along with the pectoralis major and pectoralis minor muscles the subclavius muscle makes up the anterior […]


Superficial transverse perineal muscle

The Transversus perinei superficialis (Transversus perinei; Superficial transverse perineal muscle) is a narrow muscular slip which passes more or less transversely across the perineal space anterior to the anus.


Deep transverse perineal muscle

The deep transverse perineal muscle lies in the perineum a part of the pelvic floor. The deep transverse perineal muscle arises from the inferior rami of the ischium and runs […]


Posterior cerebral artery

The posterior cerebral artery (PCA) is one of a pair of blood vessels that supply oxygenated blood to the posterior aspect of the brain (occipital lobe) in human anatomy. It […]


External sphincter muscle of male urethra

The external sphincter muscle of urethra (or sphincter urethrae membranaceae) surrounds the whole length of the membranous portion of the urethra and is enclosed in the fasciæ of the urogenital […]


Sphincter ani internus muscle

The sphincter ani internus (or internal anal sphincter IAS) is a muscular ring that surrounds about 2.5-4.0 cm of the anal canal; its inferior border is in contact with but […]


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