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Abduction

moving a body part away from the midline.

Adduction

moving a body part toward the midline.

Cardiac muscle

form the walls of the heart and contract to circulate blood.

Contract .

to shorten, decrease in size, or draw together

Contracture

tightening or shortening of the muscle

Elasticity

allows muscles to return to its original shape after it has contracted

muscular system

bundles of muscle fibers held together by connective tissue

Extension

increasing the angle between two bones or straightening a body part.

Fascia

fibrous membrane covering, supporting and separating muscle.

Flexion part.

decreasing the angle between two bones or bending a body

Insertion

end or area of a muscle that moves when muscle contracts.

Involuntary

independent action

Muscle tone

state of partial muscle contraction providing as state of readiness to act.

Origin

end or area of muscle that remains stationary when muscle

Rotation

a circular motion that turns a body part on its axis

Skeletal muscle

attached to bones and cause body movement.

Tendon

fibrous connective tissue that connects muscles to bones.

Visercal (smooth) muscle -

are found in internal organs of the body such as the digestive system, respiratory system, blood vessels and eyes.

Voluntary

Skeletal

Contractibility

when muscle fibers are stimulated by nerves, they contract or become short and thick.

Circumduction

moving in a circle at a joint. Moving one end of a body part in a circle while the other end remains stationary; swinging the arm in a circle.

Hyperextension

excessive straightening of a body part.

Pronation

turning a body part downward (turning palm down)

Supination

turning a body part upward (turning palm up)

Opposition

touching each of the fingers with the tip of the thumb.

Inversion

turning a body part inward.

Eversion

turning a body part outward.

Dorsiflexion

bending backward (bending the foot toward the knee)

Plantar flexion

bending forward (straightening the foot away from the knee)

Radial deviation

moving toward the thumb side of the hand.

Ulnar deviation

moving toward the little finger side of the hand.

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