Anatomy Horizontal in direction, attaching from the first and second transverse tubercles on the posterior surface of the sacrum to the tuberosity of the ilium. Functions Supplies static stability to the sacroiliac joint. Interested in taking our award-winning Pocket Anatomy app for a test drive?

Motion The glenohumeral joint is a multiaxial synovial ball and socket joint and involves the articulation between the glenoid fossa of the scapula and the head of the humerus. The glenohumeral joint is the most mobile joint in the body. It is capable of flexion, extension, abduction, adduction, medial rotation, lateral rotation, and circumduction. Circumduction

Anatomy Course There can be two to four sigmoid arteries. These are branches from the inferior mesenteric artery that descend towards the sigmoid colon in the lower left quadrant of the abdomen. They travel within the sigmoid mesocolon and anastomose with branches from the left colic artery and the superior rectal artery. Supply Supply sigmoid

Anatomy Loop of colon continuous above with descending colon, ordinarily within pelvis (mobile, can be displaced), starting at pelvic brim, passing across in front of sacrum from left to right, then back left to midline at level S3 (3rd fused sacral vertebra), then down to be continuous with rectum, surrounded by peritoneum with a mesocolon,

Functions Creates a significant portion (50-70%) of seminal fluid, though not all is released in the primary ejaculation (which consists mainly of prostatic fluid). The seminal vesicle empties into the vas deferens. (Note that the seminal vesicle forms in utero from a pouch of the vas deferens.). Anatomy Pair of tubular glands attached close to

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 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 One of the intrinsic muscles of the back. Consists of semispinalis capitis, cervicus and thoracis. Semispinalis capitis: Origin: Articular processes of C4 to C6 and transverse processes of C7 to T7. Insertion: Occipital bone on the area lying between the superior and inferior nuchal lines. Semispinalis cervicis: Origin: Transverse processes of T1 to T5/6.

Anatomy Origin: Superomedial area of ischial tuberosity (with biceps femoris). Insertion: Superior part of medial tibia. Key Relations: -One of the three muscles of the posterior compartment of the thigh. -Along with semimembranosus forms the superomedial boundary of the popliteal fossa. -At its insertion to the tibia, the tendon of semitendonosus is located just posterior

Anatomy Origin: External surface of lateral surface of upper eight ribs. Insertion: Medial border of scapula. Key Relations: The long thoracic nerve travels inferiorly on the surface of the muscle. Functions -Protracts the scapula laterally rotates the scapula e.g. as in the forward motion of throwing a punch. -Stabilises and holds the medial border of