PATHOLOGY MCQ
HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following would lead to a decrease in heart rate?
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sharply decreased blood volume
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parasympathetic stimulation
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norepinephrine
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exercise
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Explanation:
Detailed explanation-1: -The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
Detailed explanation-2: -The sympathetic nervous system increases heart rate, whereas the parasympathetic nervous system suppresses it.
There is 1 question to complete.