Internal Pudendal Artery

Internal pudendal artery is the branch of the internal iliac artery that provides blood to the external genitalia. To be more specific, the internal pudendal artery is the terminal branch of the anterior division of the internal iliac artery. It is smaller in females than in males.

Course:

After its origin from the anterior division of the internal iliac artery, the internal pudendal artery exits the pelvic cavity through the greater sciatic foramen to enter the gluteal region. It then enters the perineum through the lesser sciatic foramen by curving around the sacrospinous ligament.

Within the perineum, it travels through the pudendal canal alongside the internal pudendal veins and the pudendal nerve.

Branches:

As stated above, the internal pudendal artery provides blood to the external genitalia of both males and females through a number of branches as described below:

  • Inferior rectal artery: Supplies blood to anal canal.
  • Perineal artery: Supplies blood to the superficial transverse perineal muscle.
  • Posterior labial (females)/scrotal (males) branches: ┬áProvides blood to labia major and minora in females and scrotum in males.
  • Artery of the bulb of the vestibule (females)/penis (males): Supplies the bulb of vestibule in females and the bulb of penis in males.
  • Dorsal artery of clitoris (females)/penis (males): Supplies the clitoris in females and penis in males.
  • Deep artery of clitoris (females)/penis(males): Supplies the clitoris in females and penis in males