This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Heart, Circulation, and Blood, Subject name: Physiology
Discharge from baroreceptor cause inhibition of 
Select and explain. 
A. Caudal ventrolateral medulla, B. Rostral ventrolateral medulla, C. Nucleus of tractus solitarius, D. Nucleus ambiguous
B: Rostral ventrolateral medulla
Answer: B: Rostral ventrolateral medulla 
Explanation: Ans. (b) Rostral ventrolateral medulla (RVLM)Ref: Ganong, 25th ed/p.590Baroreflex mechanismIn simple terms, "increased baroreceptor discharge inhibits the tonic discharge of sympathetic nerves and excites the vagal innervation of the heart"