MUSCLE PHYSIOLOGY

Detailed explanation-1: -Contractility is the ability to shorten forcibly when ade-quately stimulated. This ability sets muscle apart from all other tissue types. Extensibility is the ability to extend or stretch. Muscle cells shorten when contracting, but they can stretch, even beyond their resting length, when relaxed.

Detailed explanation-2: -Contractility is the ability of muscle cells to forcefully shorten. For instance, in order to flex (decrease the angle of a joint) your elbow you need to contract (shorten) the biceps brachii and other elbow flexor muscles in the anterior arm.

Detailed explanation-3: -Contractility is the ability of muscle cells to forcefully shorten. Contractility allows muscle tissue to pull on its attachment points and shorten with force. ( muscles can only pull, never push.) Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone.

Detailed explanation-4: -Contractility allows muscle tissue to pull on its attachment points and shorten with force. Muscle tissue also has the quality of extensibility; it can stretch or extend. Following contraction or extension, a muscle can return to its original length when relaxed due to a quality of muscle tissue called elasticity.

Detailed explanation-5: -Muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts.