Pelvic Nerves and Vessels flashcards

Question 1

What are the first two posterior branches off the internal iliac artery?

Answer 1

Iliolumbar a.

Question 2

What artery supplies the medial ilium and L5 vertebra?

Answer 2

Iliolumbar a.

Question 3

What artery supplies the sacrum and ventral sacral nn.?

Answer 3

Lateral sacral a.

Question 4

Where does the superior gluteal a. pass through the sacral plexus?

Answer 4

Usually between L5 and S1

Question 5

Where does inferior gluteal a. pass through the sacral plexus?

Answer 5

Between S1 and S2 or between S2 and S3

Question 6

Where do the superior and inferior gluteal aa. exit the pelvis?

Answer 6

Greater sciatic foramen

Question 7

What muscle does superior gluteal a. travel superior to and inferior gluteal a. travel inferior to?

Answer 7

Piriformis

Question 8

What is the 5th branch off internal iliac a.?

Answer 8

Internal pudendal a.

Question 9

What is internal pudendal artery’s path as it exits and re-enters the pelvis?

Answer 9

Exits pelvis through greater sciatic foramen

Question 10

What forms the pudendal canal?

Answer 10

Split thickened fascia of obturator internus m.

Question 11

What are the 1st and 2nd ant. branches off internal iliac a.?

Answer 11

Umbilical a.

Question 12

Which branch of internal iliac a. runs toward the anterior abdominal wall?

Answer 12

Umbilical a.

Question 13

The umbilical a. gives off 3-4 branches to the bladder called?

Answer 13

Superior vesical aa.

Question 14

The branch of internal iliac a. which supplies the medial thigh after running through the obturator canal is?

Answer 14

Obturator a.

Question 15

What is the crown of death?

Answer 15

Corona Mortis - anastomosis between obturator and inferior epigastric vessels

Question 16

What is the third anterior branch off internal iliac a. in males which runs toward the bottom of the bladder?

Answer 16

Inferior vesical artery (also supplies prostate and seminal vesicles)[MALES ONLY]

Question 17

What is the third anterio branch off internal iliac a. in females that anastomoses with ovarian a. from the aorta?

Answer 17

Uterine artery - Supplies uterus, cervix and superior vaginal canal

Question 18

What is the 4th anterior branch off internal iliac a. in females which runs below the ureter to the vaginal canal?

Answer 18

Vaginal artery

Question 19

What provides somatic innervation of the pelvis and perineum?

Answer 19

Sacral plexus

Question 20

What provides autonomic innervation of the pelvis and perineum?

Answer 20

Autonomic plexuses

Question 21

In the sacral plexus what nerves form from L4-L5 and cross over the sacral ala?

Answer 21

Lumbosacral trunk

Question 22

What nerve of the sacral plexus emerges above piriformis m.?

Answer 22

S1

Question 23

What nerve of the sacral plexus emerges through piriformis m.?

Answer 23

S2 and S3

Question 24

What nerves of the sacral plexus contribute to the pudendal n.?

Answer 24

S2-S4

Question 25

What nerves of the sacral plexus form the sciatic and gluteal nn.?

Answer 25

L4-S3

Question 26

Where do sympathetic fibers originate to supply organs of the pelvis?

Answer 26

Sacral splanchnic nn. (T10-L2)

Question 27

Where do parasympathetic fibers originate to supply organs of the pelvis?

Answer 27

Pelvic splanchnic nn. (S2-S4)

Question 28

What type of nerves are contained in the superior hypogastric plexus?

Answer 28

Mostly sympathetic fibers

Question 29

The inferior hypogastric plexus contains what type of nerves?

Answer 29

Both parasympathetic and sympathetic nerves

Question 30

What nerves are found covering both sides of the pelvic viscera?

Answer 30

Inferior hypogastric plexus

Question 31

What is the convergence (and termination) of the sympathetic chains at the coccyx?

Answer 31

Ganglion impar