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Definition
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| muscle cells shorten by converting ___ energy into ___ energy |
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Definition
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| 1) skeletal 2) cardiac 3) visceral |
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| striated, involuntary (branch frequently, intercalated disks) |
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Definition
| smooth, involuntary (line internal organs) |
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| parts of a skeletal muscle |
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Definition
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Definition
| attachment to stationary bone |
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| attachment to movable bone |
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| strong cords of fibrous connective tissue that attach muscle to bone |
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| synovial-line tubes surrounding tendons |
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| thick myofilaments contain the protein... |
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Definition
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| thin myofilaments contain the protein... |
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Definition
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| functional unit called... |
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Definition
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| sarcomeres separated by... |
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Definition
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Definition
| thick and thin myofilaments slide past each other as a muscle contracts (using ATP) |
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Definition
| muscle whose contraction is mainly responsible for producing a given movement |
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Definition
| muscle whose contractions help the prime mover |
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| muscle that opposes the action of a prime mover |
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| enables us to maintain body position |
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Definition
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| why good posture is important |
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Definition
| good- reduces strain on muscles, bones, etc. bad- causes fatigue and deformity |
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| functions of skeletal muscle |
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Definition
| movement, posture, heat production |
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Definition
| reduced strength of muscle contraction |
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Definition
| repeated muscle stimulation without adequate periods of rest |
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| contraction without oxygen results in... |
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Definition
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| metabolic effort required to burn excess lactic acid |
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Definition
| specialized nerve that transmits an impulse to a muscle |
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Definition
| specialized point of contact between a nerve ending and the muscle fiber it innervates |
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Definition
| combination of a motor neuron with the cell it innervates |
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Definition
| minimal level of stimulation require to cause a muscle fiber to contract |
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| complete muscle contraction known as |
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Definition
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| twitch and tetanic contractions |
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Definition
| twitch- single jerky contraction (in the lab) tetanic- sustained and steady contraction |
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Definition
| contraction of a muscle that produces movement at a joint |
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| muscle contractions that do not produce movement (muscle as a whole does not shorten, tension increases) |
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| prolonged inactivity of muscles |
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| heavy resistance, DOESNT increase number of muscle fibers, mass of muscle increases |
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| allows for more efficient oxygen deliverance, DOESNT result in hypertrophy |
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| toward the midline of the body |
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| movement around a vertical axis |
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| injury from overexertion or trauma |
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| inflammation of a muscle AND a tendon |
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Definition
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| injury near a joint or involving a ligament |
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Definition
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Definition
| involuntary muscle spasms |
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Definition
| may release cell contents that ultimately cause kidney failure |
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| stress induced muscle tension |
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Definition
| can cause headaches and back pain |
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Definition
| viral infection of motor nerves |
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Definition
| a group of genetic disorders characterized by muscle atrophy |
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Term
| duchenne muscular dystrophy |
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Definition
| characterized by rapid progression of weakness and atrophy, death by 21, affecting boys |
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Definition
| autoimmune muscle disease characterized by weakness and chronic fatigue |
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