Question

hypothetically, if a muscle were stretched to the point where thick and thin filaments no longer overlapped, cross bridge attachment would be optimum because of all the free binding sites on actin no muscle tension could be generated atp consumption would increase because the sarcomere is \trying\ to contract maximum force production would result because the muscle has a maximum range of travel

Explanation:

Muscle contraction occurs when cross - bridges form between thick (myosin) and thin (actin) filaments. When thick and thin filaments no longer overlap, cross - bridges cannot form. Muscle tension is generated by the formation of cross - bridges. Without cross - bridge formation (due to no overlap), there is no force generation (muscle tension).

• For the first option: If there is no overlap, cross - bridge attachment cannot occur (not optimum), as cross - bridges form between myosin (on thick filaments) and actin (on thin filaments).
• For the third option: If no overlap, no cross - bridge cycling (which consumes ATP) occurs as there is no “attempt” to contract in terms of cross - bridge interaction.
• For the fourth option: Maximum force production requires an optimal overlap of thick and thin filaments for maximum cross - bridge formation, not no overlap.

Answer:

no muscle tension could be generated