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Q.

Parasympathetic neural signals can decrease cardiac output by 

(a) decreasing the rate of heart beat

(b) increasing the secretion of adrenal medullary hormones

(c) decreasing the speed of conduction of action potential

Choose the correct option from the following.

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a

Both a and b

b

Only a

c

Only b

d

Both a and c 

answer is D.

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Detailed Solution

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Parasympathetic neural signals decrease cardiac output by decreasing the rate of heart beat and speed of conduction of action potential.

Adrenal medullary hormones increase the cardiac output.

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