pelvic neurovasculature

Question 1

external iliac changes into _____ when it exits the _______

Answer 1

femoral a.

pelvis

Question 2

definitive terminus of the desc. aorta

Answer 2

medial sacral a.

Question 3

iliolumbar a path and supply

Answer 3

br off internal iliac runs btwn iliac crest and L5 to supply medial ilium and L5

Question 4

lateral sacral a path

Answer 4

br off internal iliac runs thru ventral sacral foramen to supply it

Question 5

path of sup gluteal a.

Answer 5

br off internal iliac, runs btwn L5 and S1 thru > sciatic foramen sup to piriformis m to supply gluteal mm w/ sup gluteal nn

Question 6

path of inf gluteal a

Answer 6

br off internal iliac runs btwn S1+2 or S2 and 3 runs thru greater sciatic for. inf to piriformis to supply gluteal mm w/ inf gluteal nn

Question 7

path of internal pudendal a

Answer 7

runs w/ pudendal n br off internal iliac a. runs out greater sciatic foramen inf./med to piriformis m. and around sacrospinous ligament to reenter pelvis thru lesser sciatic for to supply urogenital and anal triangles

Question 8

pudendal canal is made up of fascia from the ______ and runs along the _______

Answer 8

obturator internus m; ischiopubic ramus

Question 9

aa of the post division of the internal iliac

Answer 9

iliolumbar, lateral sacral, sup and inf gluteal and internal pudendal

Question 10

ant br’s off the internal iliac

Answer 10

umbilical a.
obturator a.
uterine a. 
vaginal a.
middle rectal a.

Question 11

path of obturator a.

Answer 11

ant br off internal iliac, runs thru obturator canal supplies medial thigh

Question 12

path of umbilical a

Answer 12

ant br off internal iliac runs toward ant abd wall sending off 3-4 sup vesicular brs to bladder and terminates as obliterated medial umbilical ligament

Question 13

describe and give name of obturator anastomoses

Answer 13

corona mortis; anstomosis w/ inf epigastric vess that opens the internal and external iliac systems if opened resulting in death

Question 14

uterine a path

Answer 14

ant br off internal iliac that runs directly above the ureter and anastomoses w/ ovarian from aorta and supplies uterus, vervix and sup vaginal canal

Question 15

vaginal a. path

Answer 15

split from uterine a. that runs directly below the urter and supp inf vaginal calnal and post bladder

Question 16

what’s a prob w/ the ureter during a historectomy?

Answer 16

sometimes gets snipped b/c runs btwn uterine and vaginal aa

Question 17

where is the pelvic venous plexus and what comp. can it cause

Answer 17

drains bladder prostate/uterus and rectum and can carry tumor cells or cause hypertension b/c it’s valveless

Question 18

paths of nn of sacral plexus

Answer 18

L4+5 = lumbosacral trunk which cross over sacral ala
S1- emerges above piriformis
S2+3 go thru piriformis

Question 19

which sacral nn contribute to the pudendal n?

Answer 19

S2-4

Question 20

which sacral nn form sciatic and gluteal nn?

Answer 20

L4-S3

Question 21

pelvic splanchnic are _____ fibers from ______ levels.

sacral splanchnic are ______ fibers from ______ levels

Answer 21

pelvic = parasymp from S2-4
sacral = symp from T10-L3

Question 22

path of sup hypogastric plexus

Answer 22

made up of symp fibers, covers aorta bifurcation and upper sacrum and condenses to form 2 inf hypogastric nn/plexi that diverge and curve outward to rectum

Question 23

fcn of inf hypogastric plexus

Answer 23

made of both symp and parasymp fibers that serve as main autonomic plexus of pelvis

Question 24

locations of symp chains/ganglia

Answer 24

thorax: lateral to vert. and descending medially
sacrum: medial to foramen

Question 25

what is the ganglion impar?

Answer 25

terminal tip of symp ganglion on the ant tip of the coccyx

Question 26

prob if splanchnic nn are injured during rectal surgery/hysterectomy?

Answer 26

result in impaired ladder control or sexual fcn

Question 27

direction of lymphatic drainage

Answer 27

superficial to deep and inf to sup.

Question 28

R lymphatic duct drains...

Answer 28

R upper lib, R thorax and R head and neck

Question 29

Thoracic duct drains...

Answer 29

L head and neck, L UL, L thorax and rest of body inf to thorax

Question 30

lymph inferior to the umbilicus is peculiar in that it drains...

Answer 30

inferiorly at first down to the inguinal then starts draining sup.