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muscle vocabulary
16 cards·by anthonygomez
epimysium
surrounds skeletal muscle and all fasciles in a muscle
perimysium
surrounds individual fasciles and separates muscle into small compartment
endomysium
surround individual muscle fibers
carcolemma
cell membrane of a muscle fiber (cell)
sarcoplasm
cytoplasm of a muscle fiber (cell)
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
protin 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
neuromusclar junction
connection between motor neuron and muscle fiber
neurotransmitters
chemicals that go from neuron to muscle fibers
motor unit
consists of motor neuron and a muscle fiber