Fill in the Blanks Anatomy of the skeletal muscleOnline version Review the anatomy of skeletal muscle. by Erica Moore 1 Smooth aponeurosis Skeletal Extensibility excitability Electrical Cardiac Elasticity Contractility conducting contractile refers to the ability of a muscle to respond to stimuli . refers to the ability of a muscle to shorten in response to an action potential . refers to the ability of a muscle to stretch ( without injury ) . refers to the ability of a muscle to recover its original shape after contraction or extension . muscle is attached to the skeleton , in either direction via tendons and under voluntary control . An is a connective tissue sheet attached to the skeletal muscle indirectly . muscle is found in the walls of internal organs and is under involuntary control . muscle is found in the walls of the heart and under involuntary control . Muscular tissue is specialized in that cells have both and properties .