Question

fill in the blank question

when a muscle relaxes, elastic recoil of the collagen helps to return the muscle to its resting

Explanation:

Identify the physiological context

Using the Collagen Properties and Connective Tissue Elasticity knowledge points

When a skeletal muscle contracts, it shortens and pulls on its connective tissue attachments (which contain collagen fibers). This stretching of the parallel and series elastic components stores elastic potential energy.

Determine the target state

Upon relaxation, the active tension generated by the sarcomeres ceases. The elastic recoil of these stretched collagenous connective tissues (such as the epimysium, perimysium, and endomysium) releases this stored energy, pulling the muscle back to its original, non-contracted length. In muscle physiology, this state is formally referred to as its resting length.

Answer:

When a muscle relaxes, elastic recoil of the collagen helps to return the muscle to its resting <blank>length</blank>