This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic Nervous System, Subject name: Physiology
[{'content': 'Bilateral cutting of vagus nerve causes - \nSelect and explain. \nA. Decrease heart rate, B. Decrease respiratory rate, C. Increase heart rate, D. Decreased BP', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Increase heart rate o Aortic nerve (a branch of vagus nerve) carriesBaroreceptor afferent from Aortic sinus.Chemoreceptor afferent from Aortic bodies.o Bilateral sectioning of vagus nerve causes increase in heart rate and BP due to two reasonsAbolition of baroreceptor discharge of aortic sinus on RVLM - causing increasing in sympathetic output.Inhibition of nucleus ambiguous - causing decreased parasympathetic tone.o Effect on chemoreceptors afferent is minimal as chemoreceptors are stimulate by low' PO2 and normally they have no dischange.", 'role': 'assistant'}]