Which of the Following Is the Correct Sequence That Describes

question 46

Multiple Choice

Which of the following is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?
1) Tropomyosin shifts and unblocks the cross-bridge binding sites.
2) Calcium is released and binds to the troponin complex.
3) Transverse tubules depolarize the sarcoplasmic reticulum.
4) The thin filaments are ratcheted across the thick filaments by the heads of the myosin molecules using energy from ATP.
5) An action potential in a motor neuron causes the axon to release acetylcholine, which depolarizes the muscle cell membrane.

• A) 1 → 2 → 3 → 4 → 5
• B) 2 → 1 → 3 → 5 → 4
• C) 2 → 3 → 4 → 1 → 5
• D) 5 → 3 → 2 → 1 → 4

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Definitions:

Self-Efficacy

An individual's belief in their capacity to execute behaviors necessary to produce specific performance attainments.

Chaining Ability

The capacity to link together a series of actions or learning steps into a coherent and successful sequence.

Self-Awareness

The conscious knowledge of one’s own character, feelings, motives, and desires.

Generalization

The ability to apply learned skills or behaviors to different situations, settings, or contexts beyond the original learning environment.