ANATOMY OF LATERAL PELVIC WALL AND PELVIC MASS

Question 1

Which muscles are found in the lateral pelvic wall?

Answer 1

obturator internus, coccgeus, levator ani

Question 2

What do the majority of arteries of pelvis and perineum arise from?

Answer 2

internal iliac artery

Question 3

Where does the gonadal artery arise from?

Answer 3

L2 abdominal aorta

Question 4

Where does the superior rectal artery arise from?

Answer 4

continuation of inferior mesenteric

Question 5

Which artery is only present in males?

Answer 5

inferior vesical artery

vaginal artery in females

Question 6

What does the anterior division of the internal iliac tend to supply?

Answer 6

viscera

Question 7

What does the posterior division of the internal iliac tend to supply?

Answer 7

parietal

Question 8

Which artery supplies most of the perineum?

Answer 8

internal pudendal artery

Question 9

What is the median umbilical ligament?

Answer 9

the remnant of the umbilical artery which connected the internal iliac to the placenta through the umbilical cord

Question 10

Which arteries form the anterior trunk of the internal iliac?

Answer 10

obturator 
superior and inferior vesical
vaginal
uterine
middle rectal
internal pudendal 
inferior gluteal

Question 11

Which arteries form the posterior trunk of the internal iliac?

Answer 11

superior gluteal
iliolumbar
lateral sacral

Question 12

What does the lateral umbilical fold overlie?

Answer 12

the inferior epigastric vessels

Question 13

What are the medial and median umbilical folds?

Answer 13

medial = remnant of umbilical artery

median = contains urachus

Question 14

Where does the anterior scrotal artery come from?

Answer 14

external iliac

Question 15

In males how does the internal iliac artery terminate ?

Answer 15

as dorsal and deep artery of penis

Question 16

What is the uterine artery replaced with in males?

Answer 16

vas deferens

Question 17

Give 2 anastomoses of female gonadal circulation

Answer 17

uterine and ovarian arteries

uterine and vaginal arteries

Question 18

3 ways the pelvic veins drain

Answer 18

• to internal iliac
• via superior rectal to hepatic portal
• via lateral sacral veins into internal vertebral venous plexus

Question 19

Which ureter is damaged more and why?

Answer 19

the left because the right is constant and crosses external iliac, left is more medial and crosses common iliac

left more likely to be cut when uterine artery being divided

Question 20

Name some nerves of the lateral wall of the pelvis

Answer 20

obturator nerve
sciatic nerve
sacral plexus
pudendal nerve
nerve to levator ani
pelvic splanchnic nerves

Question 21

Which lymph nodes do the superior pelvic viscera drain to ?

Answer 21

external ilaic, common iliac, aortic, thoracic duct, venous system

Question 22

Which lymph nodes do the inferior pelvic viscera drain to ?

Answer 22

deep perineum, internal iliac, common iliac, aortic, thoracic duct, venous system

Question 23

Which lymph nodes do the superficial perineum drain to ?

Answer 23

superficial inguinal