Muscle Types
Muscle Function
Movement and Action
100

This type of muscle is found in the heart

What is the cardiac muscle?

100

this process occurs when the muscle shortens

what is contraction?

100

Bending a joint is called this

What is flexion?

200

These muscles are attached to bones and help move the body

What are skeletal muscles?

200

The opposite of contraction, when a muscle returns to its normal length

What is relaxation?

200

Straightening a joint

What is extension?

300

This type of muscle is involuntary and found in organs like the stomach and intestines

What is smooth muscle?

300

The muscle that performs the main movement

What is the prime mover or agonist?

300

Moving a body part away from the midline

What is abduction?

400

These muscles are voluntary and striated

What are skeletal muscles?

400

The muscle that works opposite the prime mover

What is the antagonist?

400

Moving a body part in a circular motion

What is circumduction?

500

This muscle type has branched fibers and intercalated discs

What is cardiac muscle?

500

Muscle tone refers to this

What is the constant, slight contraction of muscles?

500

Turning the sole of the foot inward

What is inversion?

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