A by-product of involuntary muscle contraction and relaxation is:

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Multiple Choice

A by-product of involuntary muscle contraction and relaxation is:

Explanation:
Muscle activity generates heat as a by-product of metabolism. When muscles contract, the energy from ATP is used to power work, but most of the energy released as the chemical bonds are broken ends up as heat. This heat production occurs whenever muscles are active, helping to maintain body temperature. Lactic acid can be produced during very intense, anaerobic effort, but it isn’t produced by every involuntary contraction and relaxation. Nitrogen isn’t released in this process, and oxygen is used by muscles rather than produced.

Muscle activity generates heat as a by-product of metabolism. When muscles contract, the energy from ATP is used to power work, but most of the energy released as the chemical bonds are broken ends up as heat. This heat production occurs whenever muscles are active, helping to maintain body temperature. Lactic acid can be produced during very intense, anaerobic effort, but it isn’t produced by every involuntary contraction and relaxation. Nitrogen isn’t released in this process, and oxygen is used by muscles rather than produced.

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