Chapter 15 Muscle Movements

contraction

a shortening or tightening of a muscle, or reduction in size

flexion

bending a muscle, a limb

dorsiflexion

bending the foot upward (backward)

plantar flexion

bending the sole of the foot downward toward the ground

rotation

circular movment around a central point (axis)

insertion of a muscle

connection of a muscle to a bone that moves

origin of a muscle

connection of a muscle to a stationary bone

retraction

drawing backward or the state of being drawn back

protraction

extension forward or drawing forward of a part of the body

depression

lowering a surface

abduction

movement away from the midline of the body

adduction

movement toward the midline of the body

skeletal muscle

muscle connected to bones; striated or voluntary muscle

visceral muscle

muscle connected to internal organs; involuntary or smooth muscle

elevation

raisining an area beyond that of the other surface

conduction

state of excition affecting portions of a cell or tissue

extension

straightening of a flexed limb

inversion

turning inside of an organ or appendage

eversion

turning outward

pronation

turning the palm of the hand downward

supination

turning the palm of the hand upward