Pelvis 07: Blood Supply, Lymphatics, and Innervation of Pelvic Viscera

Question 1

What are the divisions of the common iliac arteries?

Answer 1

External and internal iliacs

Question 2

What is the fate of the external iliac arteries

Answer 2

They pass under the inguinal ligament and become the femoral arteries

Question 3

What are the two main branches of the internal iliacs?

Answer 3

Posterior and anterior trunks

Question 4

What are the main branches of the posterior trunk of the internal iliac?

Answer 4

Iliolumbar artery, lateral sacral artery, superior gluteal artery
It does not provide viscera

Question 5

What are the main branches of the anterior trunk of the internal iliac?

Answer 5

Vesical artery, uterine artery, vaginal artery, rectal artery, internal pudendal artery, obturator artery, inferior gluteal artery

Question 6

What is the blood supply of the uterus and vagina?

Answer 6

Ovarian artery off of the aorta; uterine artery off of the anterior trunk of the internal iliac; vaginal artery off of the anterior trunk of the internal iliac; internal pudendal

Question 7

What is the blood supply of the upper bladder in males?

Answer 7

Umbilical artery of the anterior trunk of the internal iliac; it splits into the superior vesical artery and vesiculodeferential artery

Question 8

What is the blood supply of the upper bladder in females?

Answer 8

Superior vesicle artery off of the umbilical artery off of the anterior trunk of the internal iliac

Question 9

What does the umbilical artery become beyond the superior vesicle artery in females?

Answer 9

Medial umbilical ligament

Question 10

What is the blood supply of the lower bladder in females?

Answer 10

Urethral artery off of the inferior vesical artery off of the vaginal artery off

Question 11

What is the blood supply of the lower bladder in males?

Answer 11

Prostatic branches and urethral branches of the inferior vesical artery off of the anterior trunk of the internal iliac

Question 12

What are the rectal arteries and where do they originate from

Answer 12

Superior: IMA; middle: anterior trunk of internal iliac; inferior: inferior pudendal

Question 13

What are the arteries of the male perineum?

Answer 13

Internal pudendal artery branches off into inferior rectal, artery of the bulb of the penis, perineal artery, dorsal artery of the penis, deep artery`

Question 14

What are the arteries of the demale perineum?

Answer 14

Internal pudendal artery branches off into inferior rectal, perineal artery, dorsal and deep arteries of the clitoris

Question 15

What are the superficial arteries of the male and female perineum?

Answer 15

External pudendal arteries (superficial and deep)

Question 16

What vessels cross the pelvic diaphragm above the primiformis?

Answer 16

Superior gluteal VANs

Question 17

What vessels cross the pelvic diaphragm below the primiformis?

Answer 17

Inferior gluteal VANs, pudendal and internal pudendal

Question 18

All of the pelvic veins follow the same pattern and branches as the arteries with two exceptions. What are they?

Answer 18

Iliolumbar veins drain to the ascending lumbar vein

Umbilical vein becomes ligamentum teres hepatis

Question 19

What are the three venous plexuses of the pelvis?

Answer 19

Vesical, Internal and external rectal

Question 20

What is the venous plexus of the pelvis found only in males?

Answer 20

Prostatic plexus

Question 21

What are the venous plexuses of the pelvis found only in females?

Answer 21

Uterine and vaginal plexuses

Question 22

Where does the ovarian vein drain to?

Answer 22

Renal vein

Question 23

Where does the uterine plexus drain to?

Answer 23

Internal iliac vein

Question 24

Where does the vaginal plexus drain to?

Answer 24

Internal iliac vein

Question 25

where does the prostatic plexus drain to?

Answer 25

Internal iliac vein and internal vertebral plexus

Question 26

How does blood supply change at the pectinate line?

Answer 26

Below: only inferior rectal artery and internal pudendal vein

Question 27

Internal hemorrhoids

Answer 27

Hemorrhoids superior to pectinate line, painless

Question 28

External hemorrhoids

Answer 28

Hemorrhoids inferior to pectiante line, painful

Question 29

What is the lymphatic drainage of the ovaries and testes?

Answer 29

Paraortic nodes

Question 30

What is the lymphatic drainage of most of the pelvic organs?

Answer 30

Internal iliac nodes -> common iliac nodes -> paraortic nodes

Question 31

What is the lymphatic drainage of the rectum?

Answer 31

Upper: inferior mesenteric nodes -> preaortic nodes | Middle and inferior: internal iliac nodes

Question 32

What is the lymphatic drainage of the anal canal?

Answer 32

Above pectinate line: internal iliac nodes | Below pectinate line: superficial inguinal nodes

Question 33

What nerve runs to pelvic viscera?

Answer 33

Pelvic splanchnic nerve

Question 34

What nerves run to the pelvic wall?

Answer 34

Nerve to piriformis and nerve to obturator internus

Question 35

What spinal cord segments form the nerve to piriformis?

Answer 35

L5-S2

Question 36

What spinal cord segments form the nerve to the obturator internus?

Answer 36

L5-S1

Question 37

What nerves run to the pelvic diaphragm?

Answer 37

Branches of S4 and the pudendal nerve

Question 38

What spinal cord segments form the pudendal nerve?

Answer 38

S2-S4

Question 39

What nerves run to the perineum?

Answer 39

Pudendal nerve, anococcygeal nerve, branches of S4

Question 40

What spinal cord segments form the anococcygeal nerve?

Answer 40

S4, S5, and coccyx

Question 41

What nerves run to the gluteal region?

Answer 41

Superior gluteal, inferior gluteal, nerve to piriformis, nerve to obturator internus, nerve to quadratus femoris, perforating cutaneous nerve

Question 42

What spinal cord segments form the superior gluteal nerve?

Answer 42

L4-S1

Question 43

What spinal cord segments form the inferior gluteal nerve?

Answer 43

L5-S2

Question 44

What spinal cord segments form the nerve to the quadratus femoris?

Answer 44

L5-S1

Question 45

What spinal cord segments form the perforating cutaneous nerve

Answer 45

S2-S3

Question 46

What nerves run to the lower limbs?

Answer 46

Sciatic nerve and posterior cutaneous nerve of the thigh

Question 47

What spinal cord segments form the sciatic nerve?

Answer 47

L4-S3

Question 48

What spinal cord segments form the posterior cutaneous nerve of the thigh?

Answer 48

S1-S3