Lower GI Flashcards
Vesicouterine pouch
Space between bladder and uterus
Rectouterine pouch
Space between rectum and uterus
Rectovesical pouch
Space between rectum and bladder in males
Rectum blood supply
Superior middle and inferior rectal arteries.
Superior middle and inferior rectal veins (superior drains to portal system)
Ampulla
Lower dilated part of the rectum where feces are stored
Anal canal above pectinate line
Mucous membrane, simple epithelium, visceral sensory innervation, venous drainage to portal system, lymph drainage to internal iliac nodes
Anal canal below pectinate line
Skin, stratified squamous epithelium, general sensory innervation, venous drainage to canal system, lymphatic drainage too superficial inguinal notes
Ischiorectal fossa
Space lateral to rectum filled with fat and separated from pelvis by levator Ani
Contains pudendal canal
External anal sphincter
Innervation: inferior rectal nerve
Action: closes the anus
Detrusor muscle
Parasympathetic muscle causing Constriction of the bladder causing urination