General pelvis Flashcards
where is the pelvis located?
below abdomen
pelvis contains support and protects ?
bladder, rectum and reproductive organs
bones of pelvis provides attachments to some muscles of ?
trunk and lower limb
illium + ishium + pubis =
hip bone
hip bone + sacrum =
pelvic girdle
what bone is the bone that we sit on
ishium
lower back pain can come from which joint?
sacroilliac joint
head of femur sits on which structure?
acetabulum
whats a promontory
junction between L5 and S1
bulges inward
pelvic inlet boundaries
anterior: pubic crest
lateral: pecten pubis, arcuate line and margin ala
posterior: promontory of sacrum
pelvic outlet borders
anterior: inferior margin of pubic symphysis
lateral: ischial tuberosity and ischiopubic ramus
post. lateral: inferior margin of sacrotuberous lig
inferior: anterior border of the coccyx
why is it called a false pelvis
because its found in the abdominal cavity (colon is found there)
inlet diameters
antero posterior -> between sacral promontory and upper border of pubic symphysis (10cm)
transverse -> between opposite sides of pelvic brim (12.5cm)
oblique diameter -> between illiopubic eminence and opposite sacroiliac joint (11.5 cm)
outlet diameters
antero-posterior -> distance from the pubis to the sacrococcygeal joint (12.5 cm)
transverse -> ischial tuberosities along the plane passing through anus (10cm)
diagonal conjugate
most useful measurment
called the birth canal
from the lower border of the pubis to the sacral promontory
12.5cm
what makes the diagonal conjugate important and most useful?
Estimates pelvis size, if it is smaller than normal, the fetus will not pass through and will require a c section
compare male and female pelvis: general structure
females: light and thin
males: heavy and thick
compare male and female pelvis: false pelvis
females: shallow
males: deep