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20 terms

Muscle Quiz #1

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Antagonist
muscle responsible for movement opposite of prime mover
Atrophy
muscle decreases in size, strength, number of fibers
Cardiac muscle
involuntary, striations
Cramp
muscle contracts spasmodically but does not relax completely
Endomysium
fascia that surrounds each muscle fiber
Epimysium
fascia that surrounds entire muscle
Fiber
single muscle cell
Hemoglobin
carries the oxygen to the body cells
hypertrophy
exercising muscles until they enlarge
insertion
attached to the movable part of the bone
myofibril
thick or thin protein filaments (myosin or actin)
myoglobin
found in muscle cells, temporarily stores oxygen
origin
attached to the stationary end of a bone
perimysium
separates muscles into bundles
prime mover
muscle most responsible for movement
sarcolemma
cell membrane
sarcoplasm
cytoplasm that contains nuclei, mitochondria, myofibrils
skeletal muscle
voluntary, striations
smooth muscle
involuntary, no striations
synergist
muscle that aids prime mover