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antiseptic1488 [7]
3 years ago
15

A muscle cramp is a sudden, painful contraction of a muscle, during which movement is difficult. What is happening at the cellul

ar level during a
muscle cramp?
A. Myosin and actin do not fully detach, so the muscle cannot relax
B. A lack of calcium causes the sarcomeres to lock together, preventing relaxation.
C. The motor neuron does not send a signal, so the muscle cannot relax.
D. The proteins in the myofibrils become denatured, preventing relaxation.
Biology
1 answer:
rewona [7]3 years ago
6 0

Answer:

The correct answer would be B

Explanation:

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