ANAT 101 Chapter Notes - Chapter 11: Epicranial Aponeurosis, Zygomatic Bone, Orbicularis Oris Muscle
16 Mar 2016
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Document Summary
Muscular system and muscular issue help maintain homeostasis by stabilizing posiion, producing movements, regulaing organ volume, moving substances within the body, and producing heat. Muscular system: voluntary controlled muscles of body - funcion of muscles is to produce movements of body parts or to stabilize bones. Origin: atachment of a muscles tendon - usually proximal - stays in place while inserion bone is moved. Inserion: atachment of muscles other tendon to moveable bone - usually distal o. Body: leshy porion of the muscle between the tendons. Acions: main movements that occur when a muscle contracts. Reverse muscle acion (rma): during speciic movements the origin and inserion are switched - only some muscles can do this. Lever system & leverage: bones act as levers and joints act as fulcrums to levers, compartment: group of skeletal muscles, associated blood vessels, associated nerves. Isometric contracion: no movement, but sill lexion of muscles o.
