Question

A person sprints across a football field to make the touchdown. The person’s muscles use up most of the oxygen in the blood to accomplish this. Which response do you predict would happen because of this

Answer 1

Answer:

A. The pulse and breathing rate increases to provide more oxygen.

B. The blood pressure drops because of a drop in blood volume.

C. The muscles begin to use carbon dioxide to power contractions.

D. The heart rate decreases to give more time for oxygen to enter.

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