Question

Match the terminology with the correct description.

• A. Ability to stretch
• B. Response to stimuli
• C. Ability to contract
• D. Ability to recoil

Answer 1

Muscle has four major functional characteristics: contractility, excitability, extensibility, and elasticity. Contractility refers to the capacity of muscle to contract or shorten forcefully. Excitability means that muscle responds to stimulation by nerves and hormones, making it possible for the nervous system and, in some muscle types, the endocrine system, to regulate muscle activity. Extensibility means that muscles can be stretched to their normal resting length and beyond to a limited degree. Elasticity means that if muscles are stretched, they recoil to their original resting length.