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5 Cards in this Set
- Front
- Back
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each thick filament is surrounded by how man then filaments?
vise versa? |
6 thin surround a thick
3 thick surround a thin |
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describe the myosin heads found on the thick filaments
which part has the actin binding site and ATPase activity |
light meromyosin: long, fibrous tail of the molecule
heavy meromyosin: globular heads S-1 and S-2 on HMM S-1 has actin binding site and ATPase activity |
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what makes up thin filaments?
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double strand of actin
G actin polymerize to make F-actin |
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distinguish between isotonic, isometric, concentric and eccentric
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isotonic: shortening to lift load
isometric: force develops w/o shortening concentric: muscle length decreases eccentric: muscle length increases |
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while ATP is immediate energy-supplying molecule, a second form exists that is easily mobilized.
what is it and what does it do? |
creatine phosphate
easily phosphorylates liberated ADP |
