Anterior Division Of Internal Iliac Artery

Question 1

Anterior division

Answer 1

1. Parietal
2. Visceral

Question 2

Parietal

Answer 2

1. Obturator artery
2. Inferior gluteal artery
3. Internal pudendal artery

Question 3

Visceral

Answer 3

1. Umbilical artery
2. Superior vesical artery
3. Inferior vesical artery
4. Middle rectal artery
5. Uterine artery

Question 4

Obturator artery course

Answer 4

Passes through Obturator canal

Question 5

Obturator artery supply

Answer 5

Thigh medial compartment

Question 6

Obturator artery branches

Answer 6

1. Iliac
2. Vesical
3. Pubic

Question 7

Iliac branches

Answer 7

1. To iliac fossa
2. It anastomoses with iliolumbar artery

Question 8

Vesical branches

Answer 8

Supply urinary bladder (may replace inferior vesical artery)

Question 9

Pubic branch

Answer 9

Anastomose with similar branch from inferior epigastric artery

Question 10

Obturator artery NB

Answer 10

In 30% of cases obturator artery does not arise from internal iliac artery and pubic
branch of inferior epigasteric artery enlarges to replace it (abnormal obturator artery)

Question 11

Inferior gluteal artery

Answer 11

1. Larger terminal branch of anterior division of internal iliac artery
2. Passes through greater sciatic foramen below piriformis reaching gluteal region
3. Supplies buttock and thigh, in pelvis supplies piriformis and levator ani

Question 12

Internal pudendal artery

Answer 12

1. Smaller terminal branch of anterior division
2. Passes through greater sciatic foramen below piriformis entering gluteal region
3. Then passes through lesser sciatic foramen to enter pudendal canal reaching perineum

Question 13

Umbilical and superior vesical arteries

Answer 13

1. It is the 1st branch of anterior division
2. Gives origin at its root to superior vesical artery distal to superior vesical artery origin
3. It forms a solid fibrous cord (medial umbilical ligament) which raises peritoneal fold (medial umbilical fold)

Question 14

Umbilical and superior vesical arteries supply

Answer 14

Supplies:
1. Urinary bladder superior surface
2. Ureter distal part
3. Vas deferens
4. Seminal vesicle

Question 15

Middle rectal artery

Answer 15

Supplies:
1. Rectum
2. Urinary bladder base
3. Seminal vesicle
4. Prostate
5. Vagina
It anastomoses poorly with other rectal arteries (superior and inferior rectal arteries)

Question 16

Inferior vesical artery

Answer 16

1. Present only in male (replaced in female by vaginal artery and may arise in common stem with middle rectal artery)
2. It supplies
   - Urinary bladder
   - Prostate
   - Seminal vesicles
   - Vas deferens

Question 17

Uterine artery

Answer 17

1. In female only
2. Has a tortuous course (to allow stretching as uterus grows in pregnancy)
3. It runs along uterus lateral border in medial part of broad ligament
4. Ends near ovarian hilum by anastomosing with ovarian artery

Question 18

Uterine artery supply

Answer 18

Supplies:
1. Uterus
2. Uterine tube (medial 3/4)
3. Vagina
May give rise to vaginal artery