Answer
Five important physiological properties of skeletal muscle tissue are excitability, conductivity, contractility, extensibility, and elasticity.
Excitability is the ability to perceive and respond to stimuli such as chemicals , stretch, pressure , and equilibrium (balance). The myofiber response is in the form of chemical changes across the sarcolemma (cell membrane). This results in depolarization and the generation of a potential or contraction.
Conductivity; This is the ability to propel or propagate local electrical changes along a muscle cell (myofiber) membrane (SR). In muscles this electrical change( of voltage) results in the triggering of a contraction or shortening of the muscle fiber. This causes movement at joints and elsewhere.
Contractility. This is the ability of a cell to shorten in response to stimuli. This property enables by pulling two bones of a joint together.
Work Step by Step
Extensibility:
The ability to stretch again to original length after contracting ( getting shorter/smaller). Ability to stretch repeatedly ( after contraction) without rupture.. Most cells rupture easily if stretched, but muscles can stretch several-fold their contracted lengths.
Elasticity
Muscles are able to recoil naturally ( to a shorter length) after release of force that stretched them.
Loss of muscle elasticity can lead to muscle hypertrophy, atony, flaccidity and weakness.
