Pelvic neurovascular Flashcards
abdominal aorta splits to common iliac aa. at what vertebral level
L4
vessels that supply the true pelvis
internal iliac a.
supplies pelvic organs and gluteal region
internal iliac a.
comes down midline of sacrum, right off abdominal aorta where the common iliac bifurcates
median sacral artery
posterior trunk of internal iliac a. what three branches
Iliolumbar a.
laterla sacral a.
superior gluteal a.
branch off posterior trunk of internal iliac a., between iliac crest and L5, supplies medial ilium and L5(superiorly)
iliolumbar a.
posterior trunk of internal iliac a., often comes off as more than one branch, enters ventral sacral foramina, and supplies sacrum and ventral sacral n.
lateral sacral a.
3rd major branch off posterior trunk of internal iliac a., between L5 and S1 nerves, enters gluteal region superior to piriformis m, supplies gluteal muscles, and exits greater sciatic foramen
superior gluteal artery
anterior branch of internal iliac a., between S2 and S3(sometimes S1 and S2), inferior to piriformis muscle, supply gluteal mm with inferior gluteal n.
inferior gluteal a.
anterior branch of internal iliac a., exits pelvis thru greater sciatic foramen, enters gluteal region inferomedial to piriformis, crosses over sacrospinous ligament, re-enters pelvis thru lesser sciatic foramen, supplies urogenital and anal triangles
internal pudendal a.
formed by fascia of obturator internus muscle, runs anteriorly along ischiopubic ramus, contains internal pudendal artery and pudendal nerve back in pelvis
pudendal canal
supplies urogenital, perineum and erectile tissues for male and females
pudendal
anterior branch of internal iliac a., the umbilical artery runs toward anterior abdominal wall, sends 3-4 ____ to bladder and distal ureter, terminates as
superior vesical arteries
terminates as medial umbilical ligament
anterior branch of internal iliac a., supplies medial thigh with obturator n. runs thru obturator canal
obturator artery
the anastomoses of the Corona Mortis “crown of death”
obturator artery with inferior epigastric vessels.
anterior branch of internal iliac a., supplies uterus, cervix, and superior vaginal canal, what runs immediately below this artery
uterine artery
ureter runs immediately below `
uterine artery anastomoses with __from aorta
ovarian artery from aorta
anterior branch of internal iliac a., in females supplies inferior vagina and adjacent bladder and rectum, in males supplies posterior inferior bladder, ureter, seminal vesicle and prostate
*ureter runs above this artery
females = vaginal artery
males = inferior vesical artery
anterior branch of internal iliac a., supplies rectum, anastomoses with superior rectal artery from IMA and inferir rectal from internal pudendal artery
middle rectal artery
veins of pelvis are all __, and drain into
valve-less
drain into IVC
T10-L2 prevertebral plexus
sympathetic fibers
sympathetic fibers, __=sacral splanchnic nerves
S2-S4
S2-S4, is pelvic splanchnic nerves sympathetic or parasympathetic
pelvic splanchnic nerves = parasympathetic
are splanchnic nerves sympathetic or parasympathetic
sympathetic
presynaptic cell bodies of pelvis reside at what vertebral level *parasympathetic fibers
S2-S4
why do we need pelvic parasympathetics to go up into the abdominal cavity
goes the vagus nerve ends at the proximal 2/3 of the transverse colon, so hindgut needs
contains both sympathetic and parasympathetic fibers, found covering pelvic viscera bilaterally, serves as main autonomic plexus of pelvis
inferior hypogastric plexus
autonomic plexus of pelvis
inerior hypogastric plexus
sympathetic fibers off sympathetic chain
sacral splanchnic nerves
presympathetic fibers off S2-S4
pelvic splanchnic nerves
two things enter the inferior hypogastric plexus what are they
sacral splanchnic nerve and pelvic splanchnic nerve
each organ has its own __ drainage
lymphatic
lymphatic drainage is usually __ to ___
superficial to deep
entire body lymphatic drains into__, located on the left side at the root of the neck at the venous angle(between left subclavian and left internal jugular)
thoracic duct
drains left head and neck, remainder of thorax, abdomen, pelvis
thoracic duct
state the path of the internal pudenal a.
exits pelvis thru greater sciatic foramen, enters gluteal region inferiomedial to piriformis, crosses over sacrospinous ligament, re-enters pelvis thru lesser sciatic foramen, supplies urogenital and anal triangles
in males, branch off internal iliac artery, provides vas derens and seminal vesicle
superior vesical arteries off umbilical a. from anterior branch of internal iliac a.
