What are the parasympathetic neurons, Biology

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What are the parasympathetic neurons

Patient A has a disease that has destroyed half of the alpha-adrenergic receptors on each of the smooth muscles that control the diameter of patient A's arterioles.  Which of the following will help restore patient A's blood pressure toward normal levels?

A. Lower values of cardiac output compared with pre-disease values of cardiac output.

B. Lower values of activity in parasympathetic neurons that synapse on SA node cells of the heart compared with pre-disease levels of activity in these parasympathetic neurons.

C. Higher values of activity in the parasympathetic neurons that synapse on the smooth muscles that control the diameter of patient A's arterioles compared with pre-disease values of activity in these neurons.

 


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