Biology · Human Physiology - Neuromuscular Junction
Arrange the following cellular events in the correct sequence after a nerve impulse reaches the axon terminal: (i) Action potential propagates along sarcolemma and down T-tubules; (ii) Calcium ions bind to troponin, causing a shape change; (iii) Acetylcholine is released into the synaptic cleft via exocytosis; (iv) Myosin heads perform the power stroke.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(iii), (i), (ii), (iv)✓
- 2(i), (iii), (ii), (iv)
- 3(iii), (ii), (i), (iv)
- 4(i), (ii), (iii), (iv)
Correct answer
(iii), (i), (ii), (iv)
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