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muscle flashcards
study aids
16 cards·by maaaarryy
epimysium
surrounds skeletal muscle and all fascicles in the muscle
perimysium
surrounds individual fasciles and separates muscle into small comparments
endoysuim
surrounds individual muscle fibers
sacrolemma
cell membrane of a muscle fiber ( cell )
sacroplasm
cytoplasm of a muscle fiber
myofibril
threads of protein the sarcoplasm
myosin
thick protein filament inside a myofibril
actin
thin protein fliament inside a myofibril
i band
actin fliament attached to z-lines
z-band
protein to witch 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
chemicals that go to from meuron to muscle fibers
motor unit
consits of motor neuron and a muscle fiber