Lecture 11 - Pelvis and Pelvic Floor Flashcards
pelvic is composed of 3 bones
Ilium, pubis, ischim
pelvis is divided into 2 regions by the __
pelvic brim
pelvis is divided into 2 regions;
1; above pelvic brim, pelvic inlet continuous with abdominal cavity, also called __ pelvis
2;below pelvic brim, pelvic outlet closed off below by muscluar pelvic floor, also called ___ pelvis
- false pelvis /greater
2. true pelvis /lesser
part of the pelvic brim or inlet, has 3 boney features;
linea terminalis =pubic crest, pectenpubis, adn arcuate line
ligament of pelvis that connects 2 pubic bones
pubic symphysis
ligament of pelvis that connects ischial tuberosity to sacrum/coccyx
sacrotuberous ligament
ligament of the pelvis that connects ischial spine to sacrum/coccyx(lower boundary of greater sciatic foramen)
sacrospinous ligament
ligament that crosses sacroiliac joint, very large broad ligament on either side of the sacrum
anterior sacroiliac ligament
ligament from ischial spine to sacrum/coccyx, lower boundary of greater sciatic foramen
sacrospinous ligament
ligament from ischial tuberosity to sacrum/coccyx, lower border of lesser sciatic foramen
sacrotuberous ligament
opening that remains in the obturator membrane,
obturator canal
ligament between sacrum and iliaic and SI joint, will not see in lab
interocceous ligament
attach to anterior sacrum to greater trochanter, passes behind greater sciatic notch, closes off posterior/superior pelvic outlet
piriformis muscle
obturator foramen to greater trochanter, covered with thick fascia and attaches to levator ani as tendinous arch, passes through less sciatic foramen
obturator internus
piriformis m. passes thru greater sciatic foramen and in innervated by
S1 and S2
obturator internus muscle arises in pelvis to act on hip joint, passes thru less sciatic foramen and is innervated by
L5,S1
largest component of pelvic floor
levator ani muscles(iliococcygeus muscke, pubococcygeus muscle, and puborectalis muscle)
separates the pelvic cavity from the perineum, formed by muscle and fascia
pelvic floor
__ and __ are the two components of the pelvic floor or pelvic diaphragm, assisted by piriformis and obturator internus muscles
levator ani and coccygeus
largest muscle in the urogenital diaphragm, fills the deep perineal pouch
deep transverse perineal muscle
ureters transport urine from kidney’s to bladder, travel to __ aspect of urinary bladder
posterolateral
ureters in the female cross __ and in males cross __
females it crosses uterine artery
males ureters cross ductus deferens
urinary bladder stores urine prior to expulsion thru urethra, consists of smooth muscle called
detrusor urinae
an organ found in males which is in between the bladder and perineum which the urethra passes through the gland
prostate
combination of the urogenital tracts in the male
prostatic part of urethra
rectum is located in the true pelvis superior to the pelvic floor, normally constricted by
puborectal sling (U shaped puborectalis m.)
continuous with rectum at anorectal junction and produces curvature at anorectal junction (perineal flexure)
anal canal
fascial sheath derived from anterior abdominal wall. from inguinal canal into scrotum
spermatic cord
spermatic cord surrounds what structures
surrounds ductus deferens, testicular vessels and nerves
2 pea sized glands within urogenital diaphragm, empty into penile urethra
bulbourethral (cowper’s) gland
the __ of the epididymis is continuous with the vas deferens
tail
primary reproductive organs of female
ovaries
muscular tubes for transport of ovum to uterus, open canal from peritoneal cavity to uterus
uterine (fallopian) tubes
uterine tubes are open channels from peritoneal cavity to uterus and are made up of fimbriae, __,__,__
infundibulum, ampulla, isthmus
usually anteverted and at right angle to vaginal canal, can enlarge 20x during pregnancy
uterus
inferior neck of uterus protruding into vaginal canal, opens to vagina as external os and uterus as internal os
uterine cervix
circular gutter surrounding cervix, deeper posterior than anterior
vaginal fornix
uterine ligament that is peritoneum covering ovarian vessels and nerves
suspensory ligament
uterine ligament that is peritoneum covering uterus and uterine tube, ovaries
broad ligament
uterine ligament that anchors ovary to uterus
ovarian ligament
comes from gubbernaculum embryro
uterine ligament, continuous of ovarian ligament, passes thru inguinal canal to fuse with labia majora
round ligament of the uterus
posterior extension of the broad ligament (uterine)
mesovarium
portion of male urethra passing through perineal membrane leading into the spongy part of the urethra
membranous part of urethra
