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Muscle Vocab
16 cards·by IM_GOOGLED
epimysium
surrounds skeletal muscle and all fasicles in a muscle
perimysium
surounds individual fasicles and seprates muscles into seperate compartments
endomysium
surrounds individual muscle fibers
sarcolemma
cell membrane of a muscle fiber
sarcoplasm
cytoplasm of a muscle fiber
myofibril
threads of protein inside the sarcoplasm
myosin
thick protein filament inside a myofibril
actin
thin protein filament inside a myofibril
i band
actin filaments attached to Z-lines
z line
protein to which actin binds
a band
region where myosin overlaps actin
sarcomere
unit of muscle from Z-line to Z-line
motor neuron
nerve cell that connects to muscle fiber
neuromuscular junction
connection between motor neuron and muscle fiber
neurotransmitters
chemichals that go from neuron to muscle fibers
motor unit
consists of motor neuron and a muscle fiber