Pelvic Vessels and Nerves

Question 1

What are the nerve roots of the sciatic nerve?

Answer 1

L4,5 S1-3

Question 2

What does the sciatic nerve supply?

Answer 2

• Posterior compartment of thigh
• All muscles in the leg and foot

Question 3

What are the gluteal nerves?

Answer 3

• Superior gluteal
• Inferior gluteal

Question 4

What are the nerve roots of the superior gluteal nerve?

Answer 4

L4,5 S1

Question 5

What does the superior gluteal nerve supply?

Answer 5

Gluteus medius and minimus

Question 6

What are the nerve roots of the inferior gluteal nerve?

Answer 6

L5 S1,2

Question 7

What does the inferior gluteal nerve supply?

Answer 7

Gluteus maximus

Question 8

What are the nerve roots of the nerve to obturator internus?

Answer 8

Direct L5-S1

Question 9

What are the nerve roots of the nerve to piriformis?

Answer 9

Direct from S1,2

Question 10

What are the nerve roots of the nerve to levator ani?

Answer 10

Direct S4 and Pudendal

Question 11

What are the nerve roots of the nerve to the coccygeus?

Answer 11

Direct S4,5

Question 12

What are the nerve roots of the pudendal nerve?

Answer 12

S2-4

Question 13

What does the pudendal nerve supply with innervation?

Answer 13

• Levator ani
• External anal sphincter
• External urethral sphincter
• Bulbospongiosus
• Ischiocavernosus

Question 14

What type of innervation does the pudendal nerve give?

Answer 14

• Motor
• Sensory

Question 15

What type of innervation do the inferior and superior hypogastric plexuses give?

Answer 15

Autonomic

Question 16

What function does sympathetic innervation have in the pelvis?

Answer 16

• Decrease rectum movement
• Contract internal anal and urethral sphincters
• Relax bladder detrusor
• Contract ductus deferens and seminal vesicles
• Relax and contract uterus
• Vasoconstriction

Question 17

What is the function of parasympathetic innervation in the pelvis?

Answer 17

• Motility of rectum and anal canal
• Relax internal anal sphincter
• Contracts detrusor
• Vasodilation of arteries

Question 18

What are the nerve roots of the parasympathetic innervation in the pelvis?

Answer 18

Pelvic splanchnic nerves S2-4

Question 19

What level does the aorta divide into 2 common iliac arteries?

Answer 19

L4

Question 20

What do the common iliac arteries divide into?

Answer 20

• Internal iliac branch
• External iliac branch

Question 21

What branch supplies blood to the pelvis?

Answer 21

Internal iliac branch

Question 22

How many divisions does the internal iliac artery have?

Answer 22

2
- Anterior
- Posterior

Question 23

What are the branches of the anterior division of the internal iliac artery in males?

Answer 23

• Inferior vesical
• Middle rectal

Question 24

What does the anterior division of the internal iliac artery supply in males?

Answer 24

• Prostate
• Seminal vesicles
• Ductus deferens

Question 25

What are the branches of the anterior division of the internal iliac artery in females?

Answer 25

• Uterine
• Vaginal

Question 26

What are the branches of the posterior division of the internal iliac artery?

Answer 26

• Iliolumbar
• Lateral sacral
• Superior gluteal