pelvis and peruneum Flashcards
what is the bony pelvis
the 2 pelvic bones and the sacrum
what is the shallow basin
it is formed from the 2 iliac fossae and is technically part of the abdomen
what is the pelvic cavity
the region between the pelvic inlet and outlet
short and cylindrical in women
elongated and tapered in men
organs in the pelvic cavity
urinary bladder prostate gland uterus cervix upper vagina rectum
what is the pelvic floor
sheet of muscle
pelvic diaphragm
formed by the levator ani muscle
describe the urinary bladder
tetrahedral
superior surface is covered in perineum
inferolateral walls contact muscles of pelvic wall and pelvic diaphragm
posterior surface contacts the seminal vesicles and rectum (male) and superior part of the vagina (female)
ureter enter at postero-superior corners
urether leaves through inferior corner - thick sm = vesical sphincter
where does the bladder go when full
expands into the loose fascia, between peritoneaum and the transversalis fascia of anterior abdominal wall
describe the prostate gland
surrounds the part of the male urethra
secretes into the urethra through many openings
contains sm - contract in orgasm to pump secretion in urethra
this is emission -> contraction of skeletal muscle arund penile urethra = ejaculation
describe the seminal vesicles
lie on the posterior surface of bladder
each has a duct that opens into ductus deferebs below dilated ampulla
combined duct on each side passes through the postrate to the urethra
describe the uterus
receives 2 uuterine tubes at upper cornrs through anterior wall of the vagina
domed upper portion above tubes is fundus
main part =- body
thick, fibromuscular cylinderacal part is projecting vagina = cervix
uterus has thick wall of sm - myometrium, lined by mucosa wiuth glandular epithelium - enbdometrium
describe the cervical canal
contains mucus secreting glands lined by the columnar epithelium
vaginal surface of cervix us covered by stratified squamous non-kertiinised epi - enterocervix
attachments of the cervix
it attachhes to the bony wall of the pelvis through strong bands of pelvic fascia - cervical (parametriial) ligaments
hold cervix in place in childbirth - prevent being pushed down through the vagina
if these fail - prolapse
describe the uterine tubes
open into peritoneal cavity close to the ovaries
the mouth - infundibulum is surrounded by tentacles called fimbriae
tubes open into thin walled ampulla followed by thicker isthmus
describe the broad ligament
fold of mesentery
switch from 1 side of pelvic cavity to another
where uterus lies
ovarian and uterine bv lie in thus
describe the rectum
serpentine tube
following the anterior surface of the lower sacrum
concave forward - has 2 bends - one to thr R and one to the L