Physical Education · Anatomy and Physiology
Arrange the sequence of events in muscle action during activation, contraction, and relaxation: (A) Depolarization of the T-tubule system causes Ca2+ release from the lateral sacs of the sarcoplasmic reticulum (B) Ca2+ binds to troponin-tropomyosin in the actin filament (C) Small, saclike vesicles within the terminal axon release acetylcholine (ACh) (D) During muscle action, actin combines with myosin-ATP (E) The muscle action potential depolarizes the transverse tubules at the A-I junction of the sarcomere Choose the correct answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(D), (C), (B), (A), (E)
- 2(B), (A), (C), (D), (E)
- 3(E), (C), (A), (B), (D)
- 4(C), (E), (A), (B), (D)✓
Correct answer
(C), (E), (A), (B), (D)
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