Contraction of Detrusor muscle is mediated by?
Correct Answer: S2,S3,S4
Description: Ans. is'a'i.e., S2,S3,S4[Ref: BDC dh/e VoI. II p. 375; Clinical anatomy p. 9127Bladder is supplied by both sympathetic and parasympathetic fibers.A) Parasympathetic:Preganglionic fibers arise from S2 to S4 cord segments, pass pelvic splanchnic nerves.After relay in ganglion cells in pelvic plexus (inferior hypogastric plexus) and in bladder wall, postganglionic fibers supply detrusor muscle.Contraction of detrusor muscle is mediated by cholinergic muscarinic receptors (M3).Preganglionic parasympathetic neurons at S2, S3, and S4 cord segments innervating bladder form sacral micturition center.
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now