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what technique does the body not use to control blood flow during activity? a. vasoconstriction b. vasodilation c. altering the contraction state of precapillary sphincters d. altering the hemoglobin content of blood

Respuesta :

The body does not use the mechanism of changing hemoglobin content of blood to control blood flow during activity.

Which law provides a rationale for the rise in blood flow to the muscles during exercise?

Heart rate and stroke volume both rise, raising cardiac output (Q). Therefore, during activity, more blood is pumped to make sure that active muscle and metabolic waste products receive an adequate supply of oxygen.

What causes a spike in blood flow during exercising?

Exercise causes the blood arteries in your muscles to enlarge, increasing blood flow. A fire hose and a garden hose's water flow can be compared. Your body uses adenosine triphosphate, also known as ATP, to store and use biochemicals as an energy source.

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