The primary muscle that contracts and caused the movement.

The opposing muscle that relaxes and lengthens to allow agonist's motion.

Striated (long, cylindrical appearance) muscle that is found all over body and allows movement.

Only found in internal organs & blood vessels. These are involuntary muscles and we don't even feel them. They're shaped like a spindle and don't have a striated look, instead the muscle is literally smooth.

Found only in the heart and are involuntary by controlling the heartbeat. Like skeletal muscle, it's a striated look and texture.

Muscle's ability to contract without nerve involvement.

Ability of a muscle to contract or shorten.

Muscle ability to return to normal after being stretched.

Ability of a muscle to receive and respond to stimuli by contracting.

Ability of the muscle to be stretched.

The end of the muscle that is anchored or where no motion takes place.

The opposite end of the origin -- where motion takes place at a joint.

Attach bone to bone (contributes greatly to joint stability).

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Chapter 5

Muscular System: General Terminology

Term	Definition
Agonist	The primary muscle that contracts and caused the movement.
Antagonist	The opposing muscle that relaxes and lengthens to allow agonist's motion.
Skeletal Muscle	Striated (long, cylindrical appearance) muscle that is found all over body and allows movement.
Smooth Muscle	Only found in internal organs & blood vessels. These are involuntary muscles and we don't even feel them. They're shaped like a spindle and don't have a striated look, instead the muscle is literally smooth.
Cardiac Muscle	Found only in the heart and are involuntary by controlling the heartbeat. Like skeletal muscle, it's a striated look and texture.
Automaticity	Muscle's ability to contract without nerve involvement.
Contractility	Ability of a muscle to contract or shorten.
Elasticity	Muscle ability to return to normal after being stretched.
Excitability	Ability of a muscle to receive and respond to stimuli by contracting.
Extensibility	Ability of the muscle to be stretched.
Origin	The end of the muscle that is anchored or where no motion takes place.
Insertion	The opposite end of the origin -- where motion takes place at a joint.
Tendons	Attaches muscle to bone.
Ligaments	Attach bone to bone (contributes greatly to joint stability).

Created by: 224918

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