Anatomy Origin: Superolateral impression on ischial tuberosity. Insertion: Posteromedial surface of medial condyle of the tibia. Key Relations: -One of the three muscles of the posterior compartment of the thigh. -Lies posteromedial to semitendinosus and the long head of biceps femoris. -Along with semitendinosus forms the superomedial boundary of the popliteal fossa. Functions -Flexes the

Anatomy Skin and (smooth/involuntary) muscle (tunica dartos) sac, just below and behind the penis, in front of anus, in pubic region, covered (sparsely) with hair by puberty, divided into two pouches, each containing a testis and associated vessels, ducts and muscles. Physiology Cremaster muscle and scrotum contract/relax to shorten/lengthen separation of testes (right and left

Anatomy Course The largest nerve in the body, arising from the lumbar plexus. It is made up of fibres from the anterior rami of L4 – S3. It originates at the posterior pelvic wall, and exits the pelvic cavity by passing through the greater sciatic foramen inferior to the piriformis muscle. It travels towards the

Anatomy The dorsal (posterior, back) of the flat triangular part of the scapula, above the spine of the scapula which projects posteriorly below, making a fossa (there is a bigger supraspinous fossa below. Gives origin to supraspinatus. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Anatomy The spine projects back from the dorsal part of the triangular scapula, about 3/4 way up, dividing the dorsal surface into small supraspinous fossa above and large infraspinous fossa below. Starting from flush with the medial (vertebral) border, it rises and thickens, becoming the acromium at its lateral (axillary) end/border. Clinical Many muscles attach;

Anatomy The back (dorsal, posterior) of the flat triangular part of the scapula, beneath the spine of the scapula which projects posteriorly above, making a fossa (there is a smaller supraspinous fossa above). Gives origin to infraspinatus (medial 2/3) and is covered by it (lateral 1/3). Vignette Fossa (Latin); ditch. Scapula fracture is ordinarily due

Anatomy Bulge just below the glenoid cavity (the socket of the ball-and-socket shoulder joint between scapula and humerus), on the lateral (axillary) border. Long head of triceps brachii attaches here. Clinical Triceps brachii (long head attached infraglenoid) extends the elbow, biceps brachii (long head attached supraglenoid) flexes the elbow and supinates the forearm (turns the

Anatomy Shallow saucer-shaped articular thickening of upper aspect (lateral angle) of lateral (axillary) surface, forming the shoulder joint by its articulation with the head of the humerus. Clinical The stability of the shoulder joint is mainly due to strength of rotator cuff (musculo-ligamentous girdle; supra- and infra-spinatus, subscapularis and teres minor muscles, and many ligaments),

Anatomy Small hook-like bulge protruding laterally from top of axillary edge of scapula, over-hanging the gleno-humeral joint anteriorly, as the acromium does posteriorly. Clinical Its muscle and ligament attachments include the coracoclavicular ligament and (as with the acromium) they stabilize the shoulder joint, given the socket shallowness necessary to afford such a big range of

Anatomy Thickened axillary continuation (bony process) of spine of scapula, arching and extending laterally to overhang the gleno-humeral joint posteriorly, as the coracoid process does anteriorly. Articulates with the collarbone (clavicle). Clinical Highest point (summit) of shoulder. Its muscle and ligament attachments (as with the coracoid process) stabilize the shoulder joint, given the shallow socket