What are the correct steps of muscle contraction starting with ACh?a.ACh diffuses across the synaptic cleft.b.The sarcolemma generates an impulse that moves down the T tubules into the sarcoplasmic reticulum.c.ACh binds to receptors in the sarcolemma.d.The sarcomere contraction produces a myofibril contraction.e.Calcium is released causing the sarcomere contraction.
A. a - c - b - e - d
B. d - a - b - e - c
C. a - b - c -e - d
D. c - e - d - a - b
Answer: A
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