reece7157 reece7157

29-04-2022
Health

contestada

Why does the heart automatically adjust the flow of blood to match activity levels?
A.
Extreme activity damages blood cells and the body needs replacements.
B.
The heart requires more oxygen when exercising.
C.
It reduces the level of oxygen in the blood.
D.
Organs and muscles require more blood under stress.

Respuesta :

29-04-2022

Answer:

D. Organs and muscles require more blood under stress.

Explanation:

Because muscular contractions can have a protracted metabolic expenditure because it has to be adjusted to the demands of the contracting muscles.

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spizzlefizzle spizzlefizzle

10-06-2022

Answer:

d

Explanation:

Answer Link

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