lect 3 & 4 pelvis (circulatory system of pelvis & nerves) Flashcards
which gender does the inferior vesicle artery occur in
males
what is homologous to the inferior vesicle artery in males in females
vaginal artery
what does the vaginal artery anastomose with
vaginal branch of the uterine artery
what does the uterine artery typically branch off from
internal iliac
what artery in males is homologous to the uterine artery in females
artery to ductus deferens
where does the ureter pass in relation to the uterine artery
it passes immediately inferior to the uterine artery near the lateral part of the fornix of the vagina
describe how the internal pudenal artery’s course runs in relation to the piriformis muscle and sacral plexus
passes inferolaterally, anterior to the piriformis and sacral plexus
what artery do the branches of the deep and dorsal arteries of the penis/clitoris come off of
internal pudenal artery
what are the branches of the posterior division of the internal iliac artery
superior gluteal artery, iliolumbar artery, lateral sacral arteries
what are some anastomosing arteries to the internal iliac artery
lumbar and iliolumbar, medial sacral and lateral sacral, superior rectal and middle rectal, inferior gluteal and deep artery of thigh
what does the ovarian artery arise from
abdominal aorta
what is the direct continuation of the inferior mesenteric artery
superior rectal artery
at what vertebral level does the superior rectal artery divide into 2 branches
S3
what are the anterior division of the internal iliac artery
umbilical, obturator, inferior vesical/vaginal, middle rectal, uterine, internal pudendal
what passes very close to the ureter
common iliac, ovarian artery, obturator artery, uterine artery, inferior vesicle artery
what arteries pass through the greater sciatic foramen
superior and inferior gluteal artery
where do the common iliac veins merge to form the IVC
L4 or L5 vertebrae
where do the external iliac nodes drain
common iliac nodes
where do the internal iliac nodes drain
common iliac nodes
what receives lymph from the posteroinferior pelvic viscera
sacral lymph nodes
what anterior rami compose the lumbar plexus
anterior rami of L1 through L4
what does the obturator nerve emerge medially to
psoas major
what anterior rami do the ilioinguinaland iliohypogastric nerves arise from
L1
what anterior rami does the genitofemoral nerve arise from
L1 and L2
what anterior rami does the lateral femoral cutaneous nerve arise from
L2 and L3
how much of the population has the accessory obturator nerve
10%
what are the 2 main branches of the sacral plexus
sciatic and pudendal nerves
what is the largest nerve in the body
sciatic nerve
what anterior rami form the sciatic nerve
L4-S3
where do the anterior rami that form the sciatic nerve converge
anterior surface of piriformis
what is the chief sensory nerve of the external genitalia
pudendal nerve
what is the pudendal nerve derived from
anterior rami fo spinal nerves S2-S4
what nerve is especially vulnerable during removal of cancerous lymph nodes from the lateral pelvic wall
obturator nerve
where do the hypogastric plexuses and the pelvic splanchnic nerves merge
within the pelvis
what is the primary function of the sacral sympathetic trunk
provide postsynaptic fibers to the sacral plexus for sympathetic innervation of the lower limb
what is typically the greatest contribution of the pelvic parasympathetic/splanchnic nerves
S3 nerve
what fibers produce erection
parasympathetic fibers
what does the pelvic pain line correspond to
inferior limit of the peritoneum
