During Excitation-Contraction Coupling

question 126

Multiple Choice

During excitation-contraction coupling,

• A) the action potential travels down the transverse tubules.
• B) Ca²⁺ is released from the sarcoplasmic reticulum.
• C) Ca²⁺ is taken up by the sarcoplasmic reticulum.
• D) both (a) and (b) above are correct.
• E) all of these answers.

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Definitions:

Isometric

Pertaining to exercises or muscle actions where the muscle length does not change and joints remain stationary.

Organic Fitness

A holistic approach to fitness that emphasizes natural movements and sustainable, healthful practices over synthetic methods and supplements.

Aerobic Exercise

Physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process, such as running or cycling.

Lean Body Weight

The weight of the body after the exclusion of body fat; often used in calculating drug dosages and nutritional needs.