Answer: Electrocardiography
Explanation:
Answer:
Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. Nervous System: The nervous system regulates the speed at which food moves through the digestive tract.
Explanation:
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Answer:
I think it is the heart contracts and expands to move blood
Explanation:
This is the only when that is having a physical force