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23 Cards in this Set
- Front
- Back
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Muscle tissue
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a collection of cells that shorten during contraction and, in doing so, create tension that results in movement of one kind or another
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Tendons
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structures that attach muscle to bone, which are composed of large bundles of white, fibrous protein known as collagen: they possess a greater stretching range than ligaments
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Skeletal muscles
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voluntary, striated muscles that are attached to the bones (by tendons and other tissue) and are the most prevalent in the human body
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Cardiac muscles
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involuntary, striated muscles that are found in only one place in the body - the heart: they are responsible for creating the action that pumps blood from the heart to the rest of the body and form the heart's thick wall
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Smooth muscles
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involuntary muscles that surround the body's internal organs
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Neuromuscular system
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the general term referring to the complex linkages between the muscular system and the nervous system
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Muscle twitch
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a single nervous impulse and the resulting contraction
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Motor unit
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the motor neuron, its axon (pathway) and the fibres it stimulates
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Neuromuscular junctions
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the nerves that transmit the message directing the muscles to move come into contact with the muscles at these points
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All-or-none principle
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stipulates that when a motor unit is stimulated to contract, it will do so to its fullest potential
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Perimysium
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a sheath of connective tissue that binds groups of muscle fibres together
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Epimysium
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connective tissue that holds together and envelopes the entire muscle
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Endomysium
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a sheath of connective tissue that surrounds the muscle fibre
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Sarcolemma
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a plasma membrane that lies beneath the endomysium
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Sacroplasm
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the muscle cell's cytoplasm, which is contained by the sarcolemma
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Myofibrils
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dfg
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Sarcomere
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dfg
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Adductor muscles
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dfg
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Abductor muscles
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dfg
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Extensor muscles
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dfg
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Flexor muscles
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dfg
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Agonist muscle
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dfg
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Antagonist muscle
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dfg
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