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protein that, along with myosin, is the chief component of muscle; makes up the this filament of a muscle fibre; also a main component of the cellular cytoskeletion; also see actin myfilament (10.1) |
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| thin myofilament consisting of two strands of actin molecules wrapped around each other; works with myosin myofilament to produce muscle contractions (10.1) |
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reduction in the size, tone, and power of a muscle (10.2) |
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| striated, involuntary muscle found only in the heart (10.1) |
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| a hig-energy compound that regenerates ATP in muscle cells (10.1) |
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| muscle fibre that produces most of its energy anaerobically; adapted for the rapid generation of power, but dependence on anaerobically produced energy results in vulnerability to accumulation of lactate, causing rapid fatigue; also called Type II fibre; compare slow-twitch fibre (102.) |
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| exercise-induced increase in muscle mass due to an increase in the size, not number, of individual skeletal muscle fibres (10.2) |
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| skeletal muscle cell (10.1) |
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| muscular contraction that lasts a fraction of a second (10.2) |
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| in animals, system made up of tissues specialized for movement (10.1) |
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| one of hundreds of thousands of cylindrical subunits that make up a skeletal muscle cell (fibre) (10.1) |
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| one of many microscopic, string-like structures, composed of actin and myosin, that make up myofibrils; responsible for muscle contraction(10.1) |
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| protein in muscle tissue that stores and transports oxygen (10.1) |
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Definition
protein that, along with actin, is the cheif component of muscle; makes up the thick filament of a muscle finre; also see myosin myofilament (10.1) |
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Definition
| thick myofilament consisting of two strands of mysosin molecules wound around each other; one end consists of a long rod, while the other end consists of a double-headed globular region; works with actin myofilament to produce muscle contractions (10.1) |
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| striated, voluntary muscle tissue that comprises skeletal muscles; also called striated muscle (10.1) |
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| an explanation for muscle contraction based on the movement (sliding) of actin filaments in relation to myosin filaments (10.1) |
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| muscle fibre that produces most of its energy aerobically; contracts slowly, but can maintain a steady, prolonged production of ATP when oxygen is available; also called Type I Fibre; compare fast-twitch fibre (10.2) |
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| nonstriated, involuntary muscle tissue found in the walls of internal organs (10.2) |
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| see skeletal muscle (10.1) |
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| fibrous connective tissue that connects skeletal muscle to bone (10.1) |
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