Repro. - 2 Flashcards
What is the sympathetic innervation of the urinary bladder?
Hypogastric nerve (T12-L2)
What is the parasympathetic innervation of the urinary bladder?
Pelvic splanchnic nerve (S2-S4)
What is the sympathetic effect on the urinary bladder?
Relaxation of the detrusor muscle
Promotes urinary retention
What is the parasympathetic effect on the urinary bladder?
Contraction of the detrusor muscle
Stimulating micturition
What is the somatic innervation of the urinary bladder?
Pudendal nerve (S2-S4)
What is the somatic effect on the urinary bladder?
Innervates the external urethral sphincter
Voluntary control over micturition
What is the epithelium of the urinary bladder?
Transitional epithelium
What is the arterial supply of the urinary bladder?
Superior vesical branch of the internal iliac artery
Males - inferior vesical artery
Females - vaginal artery
What is the venous drainage of the urinary bladder?
Vesical venous plexus drains into internal iliac vein
What are the lymphatics of the urinary bladder?
Superolateral aspect - external iliac LNs
Neck and fundus - internal iliac, sacral and common iliac nodes
What is the arterial supply of the rectum?
Superior rectal - inferior mesenteric artery
Middle rectal - internal iliac artery
Inferior rectal - internal pudendal artery
What is the venous drainage of the rectum?
Superior, middle and inferior rectal veins
Superior to portal venous system
Middle and inferior to systemic
What is the innervation of the rectum?
Sympathetic - inferior hypogastric plexuses
Parasympathetic - S2-S4 via pelvic splanchnic nerve
What is the main lymphatic drainage of the rectum?
Pararectal LNs draining into inferior mesenteric LNs
What is the epithelium of the anal canal?
Columnar epithelium
What is the epithelium of the anal canal inferior to the pectinate line?
Non-keratinised stratified squamous epithelium
What is the arterial supply of the anal canal above the pectinate line?
Superior rectal artery and branches from middle rectal artery
What is the arterial supply of the anal canal below the pectinate line?
Inferior rectal artery and branches from middle rectal artery
What is the venous drainage of the anal canal?
Superior rectal vein for above - inferior mesenteric vein
Inferior rectal vein for below - internal pudendal vein
What is the innervation of the anal canal?
Somatic - inferior rectal nerves
Inferior hypogastric above pectinate line
What is the lymphatic drainage of the anal canal above the pectinate line?
Internal iliac LNs
What is the lymphatic drainage of the anal canal below the pectinate line?
Superficial inguinal LNs