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Muscular System

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51385088Skeletal Musclemultinucleated, striated, voluntary, along the bones
51385089Smooth muscleno striations, single nucleated, involuntary, in the digestive tract and blood vessels
51385090Cardiac Musclestirations, single nucleated, in the heart, involuntary
51385091Functions of the Skeletal systemmovement, posture, stabilixe joints, generate heat
51385092sarcomereunit of muscle fiber
51385373Actinthin protein filaments of muscle fibers
51385374Myosinthick protein filaments of muscle fibers
51531940Irritabilityability to recieve and respond to a stimulus
51531941Contractilityability to shorten when an enough stimulus is given
51531942Brain and Spinal Corda skeletal muscle that must be stimulated by a nerve to contract
51531943Neuromuscular junctionssite where nerve and muscle meet
51531944Synaptic Cleftgap between nerve and muscle
51531945Neurotransmitterchemical release by nerve impulse is sent
51531946Soduimrushes into the cell and generates an action potential
51531947Contractionmuscle is shortened
51531948Twitchbreief contraction, non-normal muscle function
51531949Tetanussumming of contractions
51531950Incomplete tetanussome relaxation between contractions
51531951Complete tetanusno relaxation
51531952Areobic resperationglucose broken down to carbon dioxide, requires continuous oxygen
51531953Anerobic glycolysismakes lactic acid, produces muscle fatigue
51531954Isotonic contractionsthe muscle shortens
51531955Isometric contractionsthe muscle is unable to shorten
51531956Originattachment to a immoveable bone
51531957Insertionattachment to a moveable bone
51531958Extensionto straighten
51531959Dorsiflexionon heel
51531960Flexionto bend (180 degrees)
51531961Plantar flexionon toes
51531962Adductiontwards the middle
51531963Abductionaway from the middle
51531964Circumductionin a circle (360 degrees)
51531965Rotationturn up to 180 degrees
51531966Supinationclosed to open
51531967Pronationopen to close
51531968Inversionon the outside foot
51531969Eversionon inside foot
51531970DepolarizedNa+ rushing into cell, changing charge of a cell, negative to positive
51531971Repolarizedcells relaxed because K+ comes out of the cell
51531972Ca2+electrolyte that unlocks muscle cells

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