AIPMT | 2014Neural Control and CoordinationHard
Question
How do parasympathetic neural signals affect the working of the heart?
Options
A.Reduce both heart rate and cardiac output
B.Heart rate is increased without affecting the cardiac output
C.Both heart rate and cardiac output increase
D.Heart rate decreases but cardiac output increases
Solution
Post-ganglionic fibers of parasympathetic nervous system secrete acetylcholine which decrease heart rate and cardiac output.
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