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8 Cards in this Set
- Front
- Back
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1. Sarcomere
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individual segments of myofibrils
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2. Sarcomere
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structural and contractile proteins are organized in sequence
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3. Sarcomere
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striated appearance under electron microscope
Anisotropic= dark Isotropic= light |
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4. Sarcomere
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extends from z-line to z-line
actin anchored to z-lines |
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A-band
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myosin and actin
dark |
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I-band
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primarily actin
crosses over from one sarcomere to the other light |
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H-zone
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bare zone
absent of specific s1 subunits (heads) primarily myosin |
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M-line
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middle/midline
anchor site for myosin |
