Internal Pudendal Artery

Question 1

Beginning

Answer 1

In pelvis as one of 2 terminals of internal iliac artery anterior division

Question 2

Course

Answer 2

1. Leaves pelvis though greater sciatic foramen below piriformis
2. Reach gluteal region where it crosses ischial spine back to pass through lesser sciatic foramen and reaches ischiorectal fossa lateral wall
3. In ischiorectal fossa it enters pudendal canal
4. Runs from its posterior end to its anterior end
5. Leaves it to enter deep perineal pouch
6. Passes along pubic arch side

Question 3

End

Answer 3

Short distance posterior to symphysis pubis by dividing into dorsal and deep arteries of penis (in male) and clitoris (in female) before or after piercing perineal membrane

Question 4

Branches

Answer 4

1. Inferior rectal
2. Perineal
3. Artery of bulb
4. Urethral
5. 2 terminals

Question 5

Inferior rectal artery

Answer 5

1. Pierces pudendal canal medial wall to enter ischiorectal fossa
2. Crosses fossa from lateral to medial to reach and supply anal canal

Question 6

Perineal artery

Answer 6

1.Pierces pudendal canal medial wall to enter ischiorectal
fossa
2. Pierces perineal membrane to enter superficial perineal pouch
3. Divides into:
- Transverse perineal artery
- Posterior scrotal (in male) labial (in female)

Question 7

Transverse perineal artery

Answer 7

Supply superficial transverse perineal muscles

Question 8

Posterior scrotal or labial artery

Answer 8

Supply scrotum or labium majus

Question 9

Artery of bulb

Answer 9

1. Arises in deep perineal pouch
2. Pierces perineal membrane to enter penis bulb
3. Runs through corpus spongiosum along urethra side
4. Supplies bulb of vestibule in female

Question 10

Urethral artery

Answer 10

1. Arises in deep perineal pouch
2. Pierces perineal membrane
3. Supply penile urethra

Question 11

2 terminals

Answer 11

1. Dorsal artery of penis (in male) or clitoris (in female):
   Pierces perineal membrane and passes on penis dorsal surface (in male) or clitoris (in female)
2. Deep artery of penis (or clitoris):
   Pierces perineal membrane to enter corpus cavernosum