Vessels and Nerves of pelvis and perineum

Question 1

Explain what, in general, each division of the Internal Iliac supplies

Answer 1

Anterior - visceral branches

Posterior - pelvic wall

Question 2

What are the Posterior Branches of the Internal Iliac Arteries

Answer 2

Iliolumbar A
Lateral Sacral
Superior Gluteal

Question 3

What are the Anterior Branches of the Internal Iliac Arteries

Answer 3

Umbilical Artery
Inferior Vesical Artery / Vaginal Artery
Uterine Artery (females only)
Middle Rectal Artery
Internal Pudendal Artery

Question 4

What are the branches of the Internal Iliac Arteries

Answer 4

I: iliolumbar artery
L: lateral sacral artery
G: gluteal (superior and inferior) arteries
P: (internal) pudendal artery
I: inferior vesical (vaginal in females) artery
M: middle rectal artery
V: vaginal artery
O: obturator artery
U: umbilical artery and uterine artery (females only)

I like going places in my very own underwear

Question 5

What are the branches of the umbilical artery

Answer 5

Artery of Vas

Superior vesical artery

Question 6

From where does the inferior rectal artery arise?

Answer 6

Internal pudendal artery

Question 7

What is the ‘water under the bridge’ phenomenon

Answer 7

Approximately 2cm superior to the ischial spine, the ureters run underneath the uterine artery

Question 8

Explain the drainage of the pelvic veins

Answer 8

1: Veins form plexuses
2: Follow arteries
3: Drain into Internal Iliac Vein

See pl. 381

Question 9

Which branches supply the male perineum

Answer 9

Internal Pudendal A

External Pudendal A

Question 10

What are some of the branches of the Lumbosacral Plexus

Answer 10

NOT TO BE CONFUSED WITH LUMBAR PLEXUS

Lumbosacral Plexus:

• -Obturator: L2-L4
• -Lumbosacral Trunk (L4-L5)

Sacral plexus: part of Lumbosacral Plexus

• -Sciatic nerve
• -Pudendal nerve
• -Superior and Inferior Gluteal Nerves

Question 11

Which are the nerves that supply the Perineum

Answer 11

Pudendal Nerve
Ilioinguinal Nerve
Genitofemoral Nerve
Posterior Cutaneous N. of the Thigh

Question 12

What is the lymphatic drainage of the uterus

Answer 12

Superficial Inguinal LN

Deep Inguinal LN

External and Internal Iliac LN
-(Common Iliac LN

Sacral LN

ALL DRAIN TO THE LEFT AND RIGHT LATERAL AORTIC LYMPH NODES

Question 13

What is the lymphatic drainage of the Testes

Answer 13

Lateral Aortic LN

Question 14

What is the lymphatic drainage of the Rectum and Anal Canal

Answer 14

Anal Canal: Superficial Inguinal LN

Rectum:

• Internal Iliac LN
• Inferior Mesenteric LN

Question 15

What are the lymph nodes of the Abdomen from Superior to Inferior

Answer 15

Inferior Phrenic LN
Celiac LN
Superior Mesenteric LN
Inferior Mesenteric lN
Left Lateral Aortic LN
Right Lateral Aortic (Caval) LN
Retroaortic LN
Common Iliac LN

Question 16

What does the Inferior Vesical Artery supply

Answer 16

Bladder Fundus

Question 17

What does the Uterine Artery supply

Answer 17

Uterus
Uterine Tubes
Vagina
Ovaries

Question 18

What does the Middle Rectal Artery Supply?

Answer 18

Rectal Ampulla

Levator Ani

Question 19

What does the Obturator Artery Supply?

Answer 19

medial thigh

lateral pelvic region

Question 20

What does the Lateral sacral artery supply

Answer 20

Posterior pelvic wall

Question 21

What does the Iliolumbar artery supply

Answer 21

Lateral pelvic wall