Term
| pulling on insertion bones across joints |
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Definition
| skeletal muscles produce movement by |
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Definition
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Definition
| act as fulcrums of levers |
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Definition
| rigid rod that moves about a fixed point |
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Term
resistance (0pposes movement)
and
effort (muscle contraction/force needed to achieve action) |
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Definition
| levers acted on by two forces |
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Definition
| fulcrum located between effort and resistance (seesaw) |
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Definition
| fulcrum at one end, effort at opposite, and resistance in between (wheelbarrow) |
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Definition
| fulcrum at one end, resistance at opposite, and effort in between; most common |
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Term
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Definition
| mechanical advantage gained by lever and is responsible for muscle's strength and ROM |
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Term
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Definition
| fasciculi are parallel with longitudinal axis and terminate at either end in flat tendons |
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Definition
| modification of parallel in which muscle tapers toward the tendons; diameter is then less then the belly |
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Definition
| fasciculi are short and directed obliquely toward the tendon |
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Definition
| fasciculi on only one side of tendon |
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Definition
| fasciculi on both sides of central tendon |
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Definition
| broad origin of muscle fibers that converge to narrow, restricted insertionl; triangular shape |
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Definition
| fasciculi arranged in circular patter and enclose opening |
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Definition
| muscle that causes desired action |
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Definition
| opposite effect to that of prime mover |
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Term
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Definition
| muscles that assist prime movers helping to steady a movement |
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Term
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Definition
| synergist muscles that serve to stabilize origin of prim mover so prime mover can act more efficiently (scapula held against back and arm muscles attached to scapula) |
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Definition
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Definition
| return part from flexion to normal position |
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Definition
| move bone away from midline of body |
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Term
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Definition
| move bone toward midline of body |
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Term
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Definition
| cause part to pivot on its axis |
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Definition
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Definition
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| tense part or make it more rigid |
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Definition
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Definition
| attachment of muscle to stationary bone |
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Definition
| attachment of tendon to movable bone |
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Definition
| fleshy portion between origin and insertion |
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Definition
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Definition
| fasciculi spread over broad area and converage at thick central tendon (pectoralis major) |
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Definition
| group of skeletal muscles, and associated blood vessels and nerves, that have common function |
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Definition
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| oblique, rectus, transverse |
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Definition
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| intercostal, tibialis anterior |
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Definition
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Definition
| number of divisions composing it |
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