Answer:
While your heart is a vital organ, the brain (and the nervous system that attaches to the brain) make up the most critical organ system in the human body. The human nervous system is responsible for coordinating every movement and action your body makes.
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Explanation:
I think the answer it's C
<em>An activity that helps develop muscular endurance is;</em>
C. Rowing
<u>Aerobic endurance fitness is an important physical fitness for rowers. Rowers need to accomplish and maintain a very high level of intensity throughout their race.</u>
Answer: The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.
