This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
Stimulation of proximal cut end of vagus causes 
Select and explain. 
A. Apnea, B. | HR, C. |BP, D. #NAME?
A: Apnea
Answer: A: Apnea 
Explanation: Stimulation of proximal cut vagus nerve produces apnoea Ref guyton and hall textbook of medical physiology 12 edition page number:370,371,372