5.2 Pelvis and Perineum Flashcards
Pelvis that is superior to the pelvic inlet
False pelvis
Pelvis that is between the pelvic inlet snd pelvic outlet
True pelvis
Linea terminals is formed by
Arcuate line + pectinate line
Functions to guide the fetus towards the lesser pelvis during laboe
False pelvis
Part that is of the least pelvic dimensions
Midpelvis
Narrowest AP diameter of pelvic inlet and it’s measurement
Obstetric diameter (10 cms)
Narrowest transverse diameter
Interspinous diameter (10 cms)
AP diameter from sacral promontory to superior border pf pubis symphysis
True ap diameter
AP diameter of pelvic inlet from sacral promotory to inferior border of pubis
Diagonal AP diameter
AP diameter from sacral promontory to middle portion of pubis
Obstetric AP diameter
Weak areas of the pelvis
Pubic ramiAcetabulumRegion of sacroiliac jointAlae of ilium
Pelvic diaphragm is formed hy
Levator ani musclesCoccygeus muscle
Levator ani muscles
Puborectalis- maintaining fecal continenceIliococcygeus-supports anal canalCoccygeus-assist levayores ani
Pouch between anterior wall pf uterus and the urinary bladder
Vesicouterine pouch
Pocket formed between uterus and rectum
Rectouterine pouch
Pelvic fascia continuous with transversalis and iliipsoas fascia
Parietal pelvic fascia
Pelvic fascia providingn passage for blood vessels
Condensed endopelvic fascia
Arterial supply to the pelvisnis mainly given by
Internal iliac artery
6 main arteries entering the lesser pelvis of females
Paired internal iliac aa. Paired ovarian aaMedian sacral a. Superior rectal a.
Branches of the anterior division of internal iliac artery
UmbilicalObturatorInferior vesicalUterineMiddle rectalInternal pudendalInferior gluteal
Branches of the posterior division of the internal iliac artery
IliolumbarLateral sacralSuperior gluteal
The artery that is direct continuation if the inferior mesenteric artery that supplies the revtum and anal canal
Superior rectal artery