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15 Cards in this Set
- Front
- Back
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Types of muscle |
*smooth *cardiac *skeletal muscle |
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muscle fibers |
have a membrane, myofibrils, multiple nuclei and SR |
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Thick Filament |
myosin head, portion of a thick filament |
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Thin filaments |
heads, tall, flexible hinge region |
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Isometric |
muscles are contracting at the cellular level but the tension is absorbed by the elastic components and is resisted by the weight of the load. no external movement is produced -helps keep joints stable, and helps keeps us upright |
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concentric |
muscle shortens as it maintains tension |
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eccentric |
muscle lengthens as it maintains tensions |
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Glycogen |
substance that is put in bodily tissue, stored in carbohydrates |
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Myosin |
fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells.
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tropomyosin |
protein involved in muscle contraction. It is related to myosin and occurs together with troponin in the thin filaments of muscle tissue.
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troponin |
attached to the protein tropomyosin and lies within the groove between actin filaments in muscle tissue
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sarcomere |
a structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band.
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A band |
responsible for the muscle contraction
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H band |
is the zone of the thick filaments that is not superimposed by the thin filaments (actin)
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z disc (line) |
formed between adjacent sarcomeres
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