The Muscular Syste3

The Muscular Syste3 - The Muscular System Muscle Attachment...

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The Muscular System Muscle Attachment Sites : - origin : site of muscle's attachment to more stationary bone - insertion : site of muscle's attachment to more movable bone - belly : fleshy part of muscle between tendons of origin & insertion - tendonitis synovial membranes of a joint o most commonly affected tendons are those of: elbow (tennis elbow), wrists, o o can be caused by trauma, strain or excessive exercise Lever Systems & Leverage - bones act as levers & joints act as fulcrums in producing movement - lever : rigid structure that can move around a fixed point or fulcrum - 2 forces act on lever: effort & load (resistance) mechanical advantage (& vice-versa) - 1 st class levers : fulcrum is between effort & load (e.g.: scissors & seesaws; atlantooccipital
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The Muscular Syste3 - The Muscular System Muscle Attachment...

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