Health, 09.12.2020 23:20 NEUROPHARMACOLOGICAL

Why does the heart automatically adjust the flow of blood to match act A. Extreme activity damages blood cells and the body needs replacements.
B. The heart requires more oxygen when exercising.
C. It builds up a higher level of oxygen in the blood.
D. Organs and muscles require more blood under stress.
Please select the best answer from the choices provided.
A

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Why does the heart automatically adjust the flow of blood to match act A. Extreme activity damages...