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Arrange the following events at the Neuromuscular Junction in the correct sequence: (1) AChase splits apart ACh (2)...

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Medical Sciences

Arrange the following events at the Neuromuscular Junction inthe correct sequence:
(1) AChase splits apart ACh
(2) exocytosis of ACh
(3) ligand-gated Na+ channels open in muscle cell
(4) voltage-gated Ca+2 channels open in synaptic knob
(5) Action Potential in MUSCLE cell
(6) activation of Ach Receptor Sites on muscle cell
(7) muscle cell contracts
The correct sequence should read:

A. 1, 3, 2, 4, 6, 5, 7
B. 2, 3, 5, 4, 6, 7, 1
C. 2, 4, 6, 3, 5, 7, 1
D. 2, 6, 3, 5, 4, 7, 1
E. 3, 2, 4, 6, 5, 7, 1
F. 4, 1, 2, 6, 3, 5, 7
G. 4, 1, 6, 3, 5, 2, 7
H. 4, 2, 6, 3, 5, 7, 1
I. 4, 5, 6, 2, 3, 7, 1
J. 5, 2, 6, 3, 4, 7, 1
K. 5, 2, 6, 4, 3, 7, 1
L. 6, 3, 4, 2, 5, 7, 1
M. 6, 7, 5, 4, 3, 1, 2

Answer & Explanation Solved by verified expert
4.1 Ratings (660 Votes)
Ans H 4263571 The correct order of events at neuromuscular junction are 4 Voltage gated calcium channels open in synaptic knob First step is arriving of action potential in the axon terminal of the nerve This leads to opening of voltage gated calcium channels and    See Answer
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