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Questions and Answers
Muscle tone helps us to maintain an upright ______.
Muscle tone helps us to maintain an upright ______.
posture
The contraction of alternate fibers in a muscle is known as ______.
The contraction of alternate fibers in a muscle is known as ______.
muscle tone
Muscle fibers need ATP to ______.
Muscle fibers need ATP to ______.
contract
The ______ regulates muscle tone in the brain.
The ______ regulates muscle tone in the brain.
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Normal muscle tone generates approximately 25% of the total body heat at ______.
Normal muscle tone generates approximately 25% of the total body heat at ______.
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Study Notes
Muscle Tone
- Muscle tone is a state of slight contraction in most muscles, except during certain sleep stages.
- Muscle tone helps maintain an upright posture, for example, keeping your head up when sitting upright.
- Muscle tone is achieved by alternating contractions of muscle fibers, preventing fatigue.
- This is similar to a pianist continuously rippling their fingers over the piano keys, where some notes are always sounding while others change.
- The cerebellum regulates muscle tone.
Muscle Tone and Heat Production
- Muscle fibers require ATP (adenosine triphosphate) for contraction.
- During cell respiration, muscle fibers produce heat as a byproduct of ATP production.
- Muscle tone contributes approximately 25% of total body heat at rest.
- Heat production increases significantly during exercise.
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