3a Define optimal length of a muscle and b Explain what caus

3a- Define optimal length of a muscle and (b) Explain what causes force of contraction to change with length.

Solution

The optimal length of a muscle is 2.25 um

Greatest force is generated by muscles when it is at resting length. Least force is generated when muscles are shortened or stretched relative to the resting length.

Explanation: The magnitude of overlap between actin and myosin filaments of the muscles determines the tension generated in the skeletal muscles.