question_answer

Put the following statement in proper order to describe muscle contraction.

1. Signal sent by CNS via motor neuron.

2. Generation of action potential in the sarcolemma.

3. Release of\[C{{a}^{+2}}\]from sarcoplasmic reticulum.

4. The neurotransmitter acetyl choline is released motor endplate.

5. I band reduced

A) \[1\to 2\to 4\to 3\to 5\]

B) \[1\to 4\to 2\to 3\to 5\]

C) \[1\to 4\to 3\to 2\to 5\]

D) \[5\to 4\to 3\to 2\to 1\]