What is happening during the latent period of a muscle twitch?
A. The muscle relaxes and returns to its former length.
B. The neurotransmitter is diffusing across the synaptic cleft, causing an electrical signal in the muscle cell.
C. The myosin-actin cross-bridges are broken and the sarcomere shortens.
D. ADP and phosphate are released, and the power stroke of the contraction occurs.
E. Fresh ATP binds to the myosin, causing it to return to its resting position.
Answer: B
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Fill in the blank with correct word.
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A. NAD B. ATP C. FAD D. NADP
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Fill in the blank(s) with the appropriate word(s).