Towards the end of a muscles range of motion when lengthening, which of the following statements is true regarding the contractile component of muscle?Group of answer choicesonly small forces can be generated as most of the cross-bridges cannot reach the actin filamentslarge forces can be generated as titin extends and develops considerable tensiononly small forces can be generated as the actin filaments overlap each other and prevent some cross-bridges binding to their respect actinlarge forces can be generated as all the cross-bridges can easily bind the actin filament

Towards the end of a muscle's range of motion when lengthening, only small forces can be generated as most of the cross-bridges cannot reach the actin filaments.

Here's why:

Muscle contraction is facilitated by the sliding filament theory, where actin and myosin filaments within the sarcomere slide past one another, creating a contraction. This is facilitated by cross-bridges formed between myosin heads and actin filaments.

When a muscle is stretched to the end of its range of motion, the actin and myosin filaments are pulled apart to a point where fewer myosin heads can reach the actin filaments to form cross-bridges. This results in a decrease in the force that the muscle can generate, as fewer cross-bridges mean less force can be produced.

Therefore, towards the end of a muscle's range of motion when lengthening, only small forces can be generated as most of the cross-bridges cannot reach the actin filaments.