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11 Cards in this Set
- Front
- Back
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What are characteristics of all muscles? 4
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excitability
contractility extensibility elasticity |
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What are the functions of muscle? 4
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produce movement
maintain posture-skeletal muscle stabilize joints generate heat |
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What is a muscle cell?
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elongated cell known as a fiber
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What is the muscle cell surrounded by?
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sarcolemma- plasma membrane
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What does the muscle cell contain? 5
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cytoplasm
nuceli mitochondria Sacroplasmic Reticulum Myofibrils |
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Role of myofibrils?
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contractile organelle
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Myofilaments?
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proteins that make up myofibrils
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What are the components of thin filaments? 3
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actin
tropomyosin troponin |
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What are the 2 elastin filaments?
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titin
nebulin |
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What does terminal cisternae contain?
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ca2+
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Role of Y-tubules?
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can conduct action potential
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