Which of the following is responsible for Bezold-Jarisch Reflex
Correct Answer: Serotonin
Description: Ans. (a) Serotonin(Ref: Ganong, 25th ed/p.592, 662)Bezold-Jarisch reflexIntracardiac injections of chemicals like serotonin, veratridine, capsaicin, phenylbiguanide activates this reflexAfferents for this reflex travel through unmyelinated vagal C fiber endingsThe reflex responses are:#Apnea followed by rapid breathing#Hypotension#BradycardiaClinical importance of Bezold-Jarisch reflex#This reflex is responsible for sinus bradycardia seen during myocardial infarction#This reflex is one of the causes for profound bradycardia and circulatory collapse after spinal anesthesia
Category:
Physiology
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