A & P Lab- Ex 12: Skeletal Muscle
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muscle fiber
A single muscle cell is referred to as a _____.
sacromere
Basic contracting unit of muscle cell consits of actin and myosin filaments between z-lines in a muscle cell
tendon
Connects muscle to bone
neuromuscular junction
Site of communication between motor neuron and muscle fiber. Uses acetylcholine (Ach) for depolarization of the cell
endomysium
Surrounds individual muscle fibers
myofilaments
The contractile proteins, actin and myosin, of muscle cells
myosin
Thick filament
actin
Thin filament
fasicle
bundle of muscle fibers
aponeurosis
strong sheet of tissue that acts as a tendon to attach muscles to bone
epimysium
surrounds entire muscle
perimysium
surrounds fascicles.
myofibril
tightly packed filament bundles found within skeletal muscle fibers