Unit 3: Muscular System
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Sarcomere
a structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band.
whole muscle
bundle of fascicles
Fascicle
bundle of muscle fibers
Myofilaments
filaments of myofibrils, constructed from proteins, principally myosin or actin
muscle fiber
muscle cell
Be able to define and put the following structures of a skeletal muscle in order from largest to smallest (and vice versa): MYOFILAMENTS (ACTIN AND MYOSIN), WHOLE MUSCLE, SARCOMERE, FASCICLES, MYOFIBRIL, and MUSCLE FIBER.
myofilament, sarcomere, myofibril, muscle fiber, fascicle, whole muscle (smallest to largest)
Myofibril
tightly packed filament bundles found within skeletal muscle fibers
