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Author Question: The initial change in heart rate at the onset of exercise is due to (Read 35 times)

futuristic

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Question 1

During mild to moderate exercise, arterial pH, PO2, and PCO2 are
◦ nearly half of normal.
◦ almost twice as high as normal.
◦ nearly normal.

Question 2

The initial change in heart rate at the onset of exercise is due to
◦ decreased parasympathetic activity.
◦ stretching of the cardiac muscle fibers in response to increased venous return.
◦ overfilling of the ventricles.
◦ increased sympathetic activity.


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Marked as best answer by futuristic on Apr 11, 2021

Carliemb17

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futuristic

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Reply 2 on: Apr 11, 2021
Excellent


yeungji

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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