Question

mechanism of muscle contraction
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Answer 1

Explanation:

Contractions can have causes that aren't due to underlying disease. Examples include normal pregnancy, natural labour, orgasm or menstruation.

Answer 2

Explanation:

The contraction generated by a single action potential is called a muscle twitch. A single muscle twitch has three components. The latent period, or lag phase, the contraction phase, and the relaxation phase.

Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other. It is generally assumed that this process is driven by cross-bridges which extend from the myosin filaments and cyclically interact with the actin filaments as ATP is hydrolysed.