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12 Cards in this Set
- Front
- Back
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Nerves |
Brain sends message along nerves to the muscle causing muscle contraction |
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Muscle |
Connected to the bone via tendon |
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Bones |
When muscle contracts the bone moves |
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Cardiac |
Involuntary muscles of the heart |
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S |
Voluntary muscle that moves the skeleton |
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Smooth |
Involuntary muscle found in the internal organs |
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Skeletal muscle |
Consists of bundles of long fibres running the length of the muscle - each fibre is 1 multinucleated cell - cells can be up to 1cm in length Each fibre is itself a bundle of smaller myofibrils |
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Myofibrils |
Composed of 2 kinda of myofilaments Thin filaments Thick filaments |
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Thin filaments |
2 strands of the protein actin arranged in a double helix and a stand of regulatory proteins that cover special binding sites on actin |
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Thick filaments |
Staggered array of myosin, a motor protein with a club-shaped head |
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Sarcomere |
Each repeating unit of light and dark bands |
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Z bands |
Outer edges of the sarcomere |
