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Question	Answer
abduction	moving away from the center or midline
actin	contractile protein found in the skin myofilament of skeletal muscle
adduction	moving toward the center or midline
all or none	when stimulated, a muscle fiber will contract fully or not at all
antagonist muscle	those having opposing actions
bursa	small cushionlike sacs found between moving body parts
carpal tunnel syndrome	muscle weakness pain and tingling in the radial side of the wrist, hand, and fingers
concentric contraction	type of isotonic muscle contraction in which a muscle's length decreases
disuse atrophy	when prolonged inactivity results in the muscles getting smaller in size
dorsiflexion	when the top of the foot is elevated with the toes pointing upward
eccentric contraction	type of isotonic muscle contraction in which a muscle's length increases under a load
eversion	foot movement that turns the ankle so that the sole faces out to the outside
extension	increasing the angle between two bones at a joint
fatigue	loss muscle power
flexion	act of bending, decreasing the angle between two bones at the joint
hypertrophy	increased size of a part caused by an increase in the size of its cell
hypothermia	subnormal core body temp below 37 degrees C
insertion	attachment of a muscle to the bone that it moves when contraction occurs
inversion	foot movement that turns the ankle so that the sole faces inward townard the midline of the body
isometric contraction	type of muscle contraction in which muscle does not shorten
isotonic contraction	of the same pressure or tension
motor neuron	transmits nerve impulses from the brain and spinal cord to muscles and glandular epithelial tissues
motor unit	a single motor neuron with the muscle cells it innervates
myofilament	ultramicroscopic , threadlike structures found n myofibrils
myosin	contractile protein found in the thick filaments of skeletal muscle
neuromuscular junction	the point of contact between the nerve endings and muscle fibers
origin	the attachment of a muscle to the bone that does not move when contraction occurs, as distinquished from insertion
oxygen debt	continued increased metabolism that occurs in a cell to remove excess lactic acid that resulted from exercise
paralysis	loss of the power of motion, especially voluntary motion
plantar flexion
posture	k
prime mover	k
pronation	k
rotation	k
sarcomere	k
sliding filament theory	k
supination	k
synergist muscle	k
tendon	k
tensynovitis	k
tetanic contraction	k
threshold stimulus	k
tonic contraction