This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Baroreceptor stimulation produces: 
Select and explain. 
A. Decreased hea rate & BP, B. Increased hea rate & BP, C. Increased cardiac contractility, D. All
A: Decreased hea rate & BP
Answer: A: Decreased hea rate & BP 
Explanation: A i.e. Decreased HR & BP Baroreceptors are the stretch receptors in the walls of hea & blood vessels eg carotid sinus & aoic arch receptors, receptors in walls of atria at enterance of SVC, IVC & pulmonary veins and receptors in pulmonary circulation (cardio- pulmonary receptors). These are stimulated by distension of the structure in which they are located 1/t vagal innervation of hea and producing vasodilation, venodilation, a drop in BP, bradycardia & decrease cardiac outputQ.