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31 Cards in this Set
- Front
- Back
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tissues with widely spaced cells and large amounts of intercellular matrix
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connective tissue
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involuntary muscle
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smooth & cardiac
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voluntary muscle
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skeletal
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muscle with striations
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cardiac & skeletal
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muscle without striations
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smooth
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which muscle type can have multiple nuclei?
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skeletal
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shape of skeletal muscle cells
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elongated
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shape of cardiac muscle cells
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branching
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shape of smooth muscle cells
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spindle
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connective tissue that covers an entire muscle
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epimysium
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connective tissue that covers just one fascicle
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perimysium
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bundle of muscle cells
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fascicle
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connective tissue that covers individual muscle cells
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endomysium
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another name for skeletal muscle cell
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muscle fiber
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cell membrane of muscle cell
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sarcolemma
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ER in a muscle cell
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sarcoplasmic reticulum (SR)
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saclike regions that hold calcium ions
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terminal cisternae
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bundle of contractile filaments within a muscle cell
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myofibril
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part of sarcolemma that projects deep into the muscle cell
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T tubule
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one T tubule between two terminal cisternae
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triad
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what are myofibrils made of?
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myofilaments
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2 types of myofilaments
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actin & myosin
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thick filament
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myosin
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thin filament
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actin
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alternation of light/dark bands
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striation
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name of dark bands
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A bands
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name of light bands
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I bands
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line that bisects the I band
made of? |
Z line
protein disc |
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stripe in center of A band
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H zone
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line in center of H zone
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M line
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name the levels of organization of skeletal muscle from smallest to largest.
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myofilaments
myofibrils muscle cells/fibers fascicles muscles |
