Pelvis Flashcards
3 bones fused into pelvis
illeum, ischium, pubum
2 points making vertical plane of pelvis
ASAS and tubercle
Flat face of pelvis
Illiac fossa
3 ligaments of pelvis
sacroiliac, sacrospinous, sacrotuberous
Ligaments that tether sacrum together
sacrotuberous and sacrospinous
Border between true and false pelvis
pelvic inlet (pubic sym, pubic crest, sup pubic rami, arctuate lines, alae of sacrum, sacral promontory
Diff between male and female pelvis
wider angle (women) shape of inlet (men have heart)
Border of pelvic outlet
pubic symphysis, pubic bodies, conjoint rami, isc. T, sacrotuberous ligaments, coccyx
Attachments of piriformis
sacrum and leaving through sciatic foramen to attach to femur
attachements of Obturator internus
internal aspects of hip bone and leaves through obturator foramen to attach to femur
Levator ani attachments
body of pubis and tendinous arch
Attachements of coccygeus
from the ischial spine and sacrospnous ligament to coccyx
Name of gap bw two levator ani muscles
urogenital hiatus
bifurcation of common illiacs
internal and external iliacs
internal illiac branches 4
to buttocks and perineum (sup and inf gluteal, internal pudendal), to medial thigh (obturator vessels), to pelvic wall (iliolumbar, lateral sacral), to pelvic viscera (umblical, uterine, middle rectal, vaginal/inf vesicle)
Level of obturator nerves
L2,3,4
Nerves in the pelvis
obtruator, sacral plexus and lumbosacral trunk, hypogastric plexus
source of nerves for hypogastric plexus
pre and postganglionic symp fibers from lumbar and sacral splanchnic nerves, preganglionic para from S2,3,4,
point of connection between colon and rectum
rectosigmoid junction
level of connection bw rectum and anal canal
puborectalis muscle
Voluntariness of sphincter
internal - involuntary, external - voluntary
Parts of anal canal
columns, valves, sinuses
Source of blood to rectum
superior rectal form IMA, middle and inf rectal from internal illiac
venous drainage from rectum
to portal from superior rectal, and to internal illiac from middle and inferior rectal
Anal canal derivatives
upper - cloaca, lower - proctodeum
Parts of the bladder
apex, fundus, neck
bladder wall muscles
detrusor
Points of anal canal lymph drainage
upper - internal illiac and inferior mesenteric, lower - superficial inguinal
Bladder innervation by type
sensory aff (pelvic splanchnics), parasymp (pelvic splanchnics), sym (T11-L2 via lumbar splanchnics)
Levels in sciatic nerve
L4-S3
Levels in pudendal nerve
s2,3,4
Path of egg though
Ovary>infundibulum>ampulla>isthmus>intramural>fundus
Layers of uterine walls
serosa>myometrium>endometrium
Blood supply to uterus
ovarian, uterine (from internal illiac), vaginal (internal illiac)
Branches of male internal illiac
Superior gluteal umbilical (superior vesical) obturator inferior vesicle middle rectal internal pudendal inferior gluteal
Branches of female internal illiac
Superior gluteal umbilical (superior vesical) obturator vaginal and uterine inferior vesicle middle rectal internal pudendal inferior gluteal
blood supply to rectum
superior rectal - IMA
middle rectal - illiac
inferior rectal - internal pudendal
