clinical anatomy of the pelvic wall and pelvic mass Flashcards
what is the peritoneum?
your peritoneum is a membrane that lines the inside of your abdomen and pelvis (parietal layer)
obturator bundle passes through what space?
obturator membrane overlies which structure?
obturator bone
what are the 3 outer ligaments of the lateral pelvis?
- sacrospinous ligament
- sacrotuberous ligament
- obturator membrane
what are the 3 bones of the lateral pelvic wall?
- ischium
- ilium
- pubis
what are the gonadal arteries?
testicular or ovarian arteries
where do the gonadal arteries come from?
- abdominal aorta due to embryological origin
- posterior abdo wall
- arise L2 layer
name 3 muscles of the lateral pelvic wall?
- piriformis
- coccygeus
- levator ani
posterior division of internal iliac supplies
- body wall structures
anterior division of internal iliac supplies
what is medial umbilical ligament
what is diff between superior and inferior vesical arteries in male vs females
- females do not have inferior vesical artery
what artery does majority of blood supply to perineum?
- internal pudendal artery
what artery do you not have in males that we do have in females in perineum?
- uterine artery and vaginal artery ((comes off internal iliac) but also branches off uterine artery))
in the female pelvis where does the anastomosis’ occur?
- between uterine artery and ovarian artery
- between uterine artery and ovarian artery
what does water under the bridge mean in female pelvis?
- ureter passes under uterine bridge
-> important in clinical setting - hysterectomy - as you do not want to damage the ureter
system of venous drainage is largelly same as arteries, what is diff between artery and veins in the perineum
- no of plexuses in veins
most venous blood from perineum drain to where?
- internal iliac vein
- some will drain via sup rectal into hepatic portal system
- some will drain via lateral sacral veins into internal vertebral venous plexus
what is the only nerve that does not branch of the sacral plexus?
- obturator nerve - branches of sacral part of lumbrosacral plexus
- only one that passes through obturator canal
pudendal nerve - S2, S3, S4 keep what off the floor?
- pelvis
pelvic sphlanic nerve carries what nervous supply?
- parasympathetic
superior pelvic viscera lymph drains which route?
- external iliac nodes -> common iliac -> aortic -> thoracic duct -> venous system
inferior pelvic viscera lymph drains which route?
- deep perineum -> internal iliac -> common iliac -> aortic -> thoracic duct -> venous system
superficial perineum lymph drains which way?
- superficial inguinal nodes
what is trans-peritoneal spread?
- disease can penetrate through peritoneal layer and disseminated into peritoneal cavity as peritoneum is only one cell thick
