Anatomy Flashcards
where do the superior, middle, and inferior rectal veins drain to?
above pectinate line: middle and superior - inferior mesenteric vein (which drains to portal)
below pectinate line: inferior - inferior rectal to the internal iliac vein (drains to systemic or caval venous system)
arteries that go the the anus above and below the pectinate line
above: from the inferior mesenteric artery
below: from the internal iliac
what artery does the obturator come off of?
anterior division of the internal iliac
the ureter passes under what artery last.
it then passes over this artery
uterine
over the vaginal artery (in females)
what happens if you clamp the ureture during a historecotmy
hydronephrosis
what artery exits the pelvis between the lumbosacral trunk and S1
superior gluteal artery
what arteries inter the anterior sacral foramina to supply the skin and mescles over the sacrum
the lateral sacral arteries
branches in order off the posterior division of the internal iliac
iliolumbar
lateral sacral
superior gluteal
ureteric orifice has what sphincter and is under what type of control?
internal ureteric sphincter under autonomic control
what forms the voluntary external sphincter of the bladder?
urogenital diaphram
what forms serrations around the inner part of the anus
embryologic origins of above and below it?
pectinate line
everything above came from primitive gut tube
below: proctodeum
nervous control above and below the pectinate line
above: autonomic
below: somatic (controllable)
what is the pelvic diaphragm “anchored” onto
obturator internus
two muscles that make up the pelvic diaphragm
A: levator ani
P: coccygeus
what does the obturator nerve and artery suppy
adductor muscles of the thigh
first artery of the anterior division of the internal iliac to exit the greater sciatic foramen
internal pudendal
second artery of the anterior division of the internal iliac to exit the greater sciatic foramen
inferior gluteal
ischial spine gives rise to this muscle
coccygeus
isthmus
the first part of the fallopian tube
ampulla
the second part of the fallopian tube, where it gets wider
the region of the prostate where most hypertrophy occurs
transitional zone
where does most prostate cancer occur
peripheral