Which term describes the property of muscle that is easily stretched and can return to original length after stretching?

Which term describes the property of muscle that is easily stretched and can return to original length after stretching?

• A. Excitability
• B. Elasticity
• C. Adduction
• D. Flexion

Answer: (B)

Elasticity describes a muscle’s ability to be stretched and then return to its original length. When stretched, elastic elements inside the muscle, including connective tissue and the sarcomere protein titin, store energy and recoil once the stretch is released. This rebound helps maintain proper muscle length, supports smooth movement, and prevents permanent deformation. This differs from excitability, which is about how muscle fibers respond to nerve or chemical signals, while adduction and flexion refer to specific movement directions rather than a tissue’s length-recovery property.

Elasticity describes a muscle’s ability to be stretched and then return to its original length. When stretched, elastic elements inside the muscle, including connective tissue and the sarcomere protein titin, store energy and recoil once the stretch is released. This rebound helps maintain proper muscle length, supports smooth movement, and prevents permanent deformation. This differs from excitability, which is about how muscle fibers respond to nerve or chemical signals, while adduction and flexion refer to specific movement directions rather than a tissue’s length-recovery property.