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16 Cards in this Set
- Front
- Back
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What do muscles support? |
All major organ systems |
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2 types of muscle fibres (myofilaments) |
Actin and myosin |
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Shape of smooth muscles |
Long and tapered |
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What do smooth muscles do? |
Move stuff IN organs |
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Where are cardiac muscles found? |
In the heart |
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How do cardiac muscles contract? |
Involuntarily |
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How do skeletal muscles contract? |
Voluntarily |
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Size of skeletal muscles compared to other muscles? |
They're the biggest |
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Where are skeletal muscles and what do they do? |
Attached to skeleton. They do locomotion and HUGELY generate body temperature. |
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How are skeletal muscles found? |
In pairs: one contracts while other relaxes |
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The hierarchy of muscle structure IMPORTANT ON FINAL EXAM |
Muscle, muscle-fibre bundle, muscle fibre, myofobrils, myofilaments |
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2 types if myofilaments? |
Actin and myosin |
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What does actin look like? |
2 strands of protein wrapped around like beads |
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What does myosin look like? |
2 strands of protein wrapped around with a head |
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How does muscle contraction work? |
Myosin bends up, binds with actin, pulls it and actin slides. ATP unbinds myosin with actin and myosin repositions. Repeat for further contracts and eventually myosin lets go and actin goes back |
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Muscle contraction |
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