Anatomy of the Lateral Pelvic Wall and a Pelvic Mass Flashcards
what does the obturator internus touch?
obturator membrane
superior pubic ramus
where is the obturator foramen located?
opening between the ischium and pubic bones
what is deep to the levator ani?
ischioanal fossa
what muscle covers the sacrospinous ligament?
coccygeus
what muscle splits the greater sciatic foramen in 2 parts?
piriformis
majority of pelvic and perineal arteries arise from what artery?
internal iliac artery
what arteries do NOT arise from the internal iliac artery?
gonadal artery
superior rectal artery
superior rectal artery arises from what artery?
it’s a continuation of the inferior mesenteric
the gonadal artery arises from what level of the abdo aorta?
L2
what covers the obturator foramen?
obturator membrane
middle and inferior rectal veins drain more into the portal/caval system
caval
superior rectal veins drain more into the portal/caval system
portal
what arteries make up the posterior division of the pelvic arterial supply?
PILS posterior iliolumbar lateral sacral superior gluteal
the gluteal arteries are split by what muscle?
piriformis
what artery makes up the “circle of death” in hernia repairs?
a pubic branch of the inferior epigastric artery that anastamoses with the obturator artery