Atlas of Human Anatomy by Netter

anastomoses with the uterine artery (a branch of the

internal iliac artery)

and left renal vein on the left

Uterine tube Ovarian artery from abdominal aorta, which

anastomoses with the uterine artery (a branch of the

internal iliac artery)

Ovarian vein drains to inferior vena cava on the right

and left renal vein on the left

Uterus Branches of ovarian artery (from the aorta), uterine

and vaginal arteries (from the internal iliac artery)

Ovarian vein (see ovary), uterine and vaginal veins

(drain to the internal iliac veins)

Lymphatic drainage of the pelvis

Lymphatic vessels accompany arteries

Most lymph drains to internal iliac nodes and then to common iliac nodes

The ovaries, testes, and rectum drain to aortic nodes

Some vessels from body of the uterus drain to superficial inguinal nodes, following the round ligament of the uterus

Perineal Vasculature

Arterial supply of the perineum
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Mainly from internal pudendal artery (branch internal iliac artery)

Supplies muscles and skin of anal and urogenital triangles, erectile bodies of perineum

Internal pudendal artery

Passes through greater sciatic foramen inferior to the piriformis muscle

Loops around the sacrospinous ligament

Enter the lesser sciatic foramen to reach the ischioanal (ischiorectal) fossa and perineum

Traverses the fossa in the pudendal (Alcock's) canal

Gives off branches before entering the canal and in pudendal canal

Medial to ischial tuberosity, terminates as deep and dorsal arteries of penis (or clitoris)

Branches of Internal Pudendal Artery Supplying Perineum

Branch Structure Supplied Comment

Inferior rectal artery Anal canal

Posterior scrotal (labial) artery Scrotum (labia in females)

Branch to bulb of penis Bulb of penis (vestibule in females)

Branch to crus of penis Crus of penis (clitoris in females)

Dorsal artery of penis (clitoris) Erectile tissue corpus cavernosum Smaller artery in females

Deep artery of the penis (clitoris) Erectile tissue corpus cavernosus Smaller artery in females

Venous drainage of the perineum

Branches of internal pudendal artery accompanied by venae comitantes

Drain into internal iliac vein

Lymphatic drainage of the perineum

Penis and vulva drain to the superficial inguinal nodes