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Muscular System
Muscles that connect,muscle fibers,how muscles move,why muscles contract
16 cards·by legacy-19853165@noemail.invalid
Epimysium
Surrounds skeletal muscle and all fasciles in a muscle
Perimysium
Surrounds individual fascicles and seperates muscle into small compartments
Endomysium
Surround individual muscle fiber
Sarcolemma
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
acting 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
Neurotransmitter
Chemicals that go from neuron to muscle fibers
Motor unit
consists of motor neuron and a muscle fiber