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Muscles
16 cards·by alex_salazar
Epimysium
surrounds skeletal Muscle and all fascicles in a muscle
Perimysium
surrounds individual fascicles and seperates muscle into small compartments
Endomysium
surrounds individual muscle fibers
sarcolemma
cell membrane of a muscle fiber
sarcoplasm
cytoplasm of a muscle fiber
Myofibril
threads of protien 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 can bind
A band
region where myosin over laps 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 thats go from neuron to muscle fiber
Motor unit
consists of motor neuron and a muscle fiber