Structure and Compartmentation - Pelvis and Perineum II Flashcards
contents of pelvis
urinary tract elements
GI tract elements
reproductive organs
urinary tract elements pelvis
most anterior structure
pelvic portion of ureter
urinary bladder
GI tract elements in pelvis
most posterior structures
rectum and anus
repro organs in pelvis
between UT and GI elements
male repro organs in pelvis
pelvic portion of vas deferens
seminal vesicles
prostate gland
female repro organs in pelvis
vagina
uterus
uterine tube
ovaries
endopelvic fascia
membranous lining and loose CT
covers and surrounds pelvic contents
fills space between peritoneum and muscles
between peritoneum and muscles
peritoneum
does not contact floor
- draped over superior aspect of pelvic structures
- distinctive folds and pouches form
rectovesical pouch
in male
between rectum and bladder
rectouterine pouch
between rectum and uterus
in female
vesicouterine pouch
in female
between superior aspect of urinary bladder and uterus
most common site of fertilization
uterine tube
fimbrae that don’t catch eggs - may go to peritoneal cavity
sperm, bacteria, etc.
-go to rectouterine pouch
broad ligament
from paramesonephric ducts
formed during formation of uterus and vagina
laterally across pelvis, folded over uterus
perineum
area between coccyx and pubis
used to refer central tendon of female
boundaries of perineum
anterior - pubis
lateral - ischiopubic rami, ischial tuberosities
posterior - coccyx and caudal sacrum
posterolateral - sacrotuberous ligament
superior - pelvic diaphragm
inferior - skin posteriorly, fascia anteriorly
UG diaphragm
stretches anteriorly between two ischiopubic rami creating urogenital and anal regions
voluntary muscles than span UG triangle
divisions of perineum
anal triangle
urogenital triangle
boundaries of anal triangle
anterior - UG diaphragm
posterior - boundaries of perineum
lateral - ischiopubic rami and obturator internus below arcus tendinus
superior - roof of anal triangle formed by inferior aspect of pelvic diaphragm
inferior - skin and superficial fascia of perineum
perineal membrane
inferior to UG diaphragm muscles
muscles of UG diaphragm
sphincter urethrae m.
comoressor urethrae
deep transvers perineal m.
sphincter urethrae m.
surrounds membranous urethrae
compressor urethrae
extends laterally from sphincter
deep transverse perineal m.
posterior to sphincter urethrae muscle
femal sphincter urethrae
aka urethrovaginalis
-surrounds vagina as well as urethra
deep dorsal vein to penis or clitoris
runs anterior to UG diaphragm
superficial perineal space
below UG diaphragm
erectile bodies, muscles, vessels, nerves