during exercise, the oxygen concentration in the blood increases to twice that of resting levels. please…
during exercise, the oxygen concentration in the blood increases to twice that of resting levels. please select the best answer from the choices provided. o t o f
Answer
Brief Explanations:
During exercise, the body's oxygen - demand increases. But the oxygen concentration in the blood doesn't double. Instead, the heart pumps more blood (increased cardiac output) to deliver more oxygen to the muscles. The oxygen - carrying capacity of the blood (e.g., amount of oxygen bound to hemoglobin) doesn't typically double during exercise compared to resting levels.
Answer:
F