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What is Bilateral cutting of vagus nerve causes - and explain in detail?
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.