ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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During physical activity, heart rate ____, what it does ____
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decreases ( ____ ) increase CO2 removal from muscle cells.
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decreases ( ____ ) increase oxygen removal from muscle cells.
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increases ( ____ ) increase CO2 removal from muscle cells.
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increase ( ____ ) increase oxygen removal from muscle cells
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Explanation:
Detailed explanation-1: -The neurons release noradrenaline which binds to receptors on the sinoatrial node. This binding causes the sinoatrial node to send impulses at a faster rate, therefore increasing heart rate.
Detailed explanation-2: -During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
Detailed explanation-3: -Carbon dioxide excess causes an increase in ventilation volume by virtue of a greater depth of breathing, the frequency decreasing slightly. The heart rate goes up with increasing carbon dioxide concentrations.
There is 1 question to complete.