For the following five events, which is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?1.Tropomyosin shifts, exposing the myosin-binding sites on actin.2.Calcium is released from the sarcoplasmic reticulum and binds to the troponin complex.3.An action potential is propagated down the transverse tubules.4.Cycles of myosin cross-bridge formation and breakdown cause the thin filaments to slide toward the center of the sarcomere.5.An action potential in a motor neuron causes the axon to release acetylcholine, which triggers an action potential in a muscle fiber. 1 → 2 → 3 → 4 → 5 3 → 2 → 4 → 1 → 5 2 → 1 → 3 → 5 → 4 5 → 3 → 2 → 1 → 4 4 → 3 → 1 → 2 → 5

Excitation and contraction of skeletal muscle fiber : the term excitation - contraction coupling was…

Answered: which is the correct sequence that…

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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For the following five events, which is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?

1.	Tropomyosin shifts, exposing the myosin-binding sites on actin.

2.	Calcium is released from the sarcoplasmic reticulum and binds to the troponin complex.

3.	An action potential is propagated down the transverse tubules.

4.	Cycles of myosin cross-bridge formation and breakdown cause the thin filaments to slide toward the center of the sarcomere.
5.	An action potential in a motor neuron causes the axon to release acetylcholine, which triggers an action potential in a muscle fiber.