Week 2 Kin. PDF

914  basic contractile unit thick protein protein mise Ifriated voluntary Troponin Tropomyosin orangefilament an Eggeto yfgfff.mg signalfrom brain EffortsEystem ...

914  basic contractile unit thick protein protein mise Ifriated voluntary Troponin Tropomyosin orangefilament an Eggeto yfgfff.mg signalfrom brain EffortsEystem  I neuron all musclefibers it controls shotgun mvarystrength by how many we turn on controlled by motor unit O  FEentaffergusce directly correlat w now many crossbridges you have are using mechanismfor forgowerstroke keep action potential going as  fore 5 54 area w 02 w o 02 ATP w o 02 getting from glucose  exercise typically is a combo not just one 1 2 3 quick butdeclines middle 953rddative delaystar Type 2 Type 2 male to female up to debate worldclassfemale nationalclassfemale nationalcrass mare  net force win hold fagainst  powerstroke motor unit sarcomere muscle primary role produceforce  muscles create only along lines tension foggy omg PI Trap actions 3 separateactions Laconcerned this class on only 75 pairs  not contractile but elastic components of cross bridges how much force a muscle can create direction of fibers what direction it's pulling  if stimulated w electricity you get a rxn contraction shorten length produce force Stretch ability able to go back to originalshape length  tendons store energy series Efferent Parallel Elastic component Perimuseum Epimysum Endomystem squatjump counter movement ten p s 8 9 1s US Sittingon box and then relax try and power up  40 of power running stored in achilles tendon isometric contraction tendons ligaments createforce elastic wantsto snapback wanaffteretched Unipennate bipennate  hold Shortens an SEE neadentric lengthen  quicker you leave concentric phase isometric less cross bridges contraction can be created speed causes the myosin to skip over some heads lengthening faster goingup stairs fastermusclelengthens vs Skippingstairs the move force it same distance but can produce most amount steps crossbridges of force were skipped rippingapart actin myosin bonds fasteryou dothis more force oroduced Law example MDL  all or nothing 80fine motor fewfibers controlled musaefbers by motor unit EYRIE  from a a single muscleimpulse eietfrtetmekcnd.ca muscle  motor recruiting more units  rate coding EEEEErcan un increase in rate rate coding TE TE TE 18 Effents end all morning  oon I Ftendon Fabercos a 100 force transferred to tendons Whenmuscle t tendon going in same direction Example 1 Example 2 25,00N 25,00N 145 Ftendon Fiber Cosa Fandom Faber Oso TOON COS25 LOONCOS45 90.6 100N 0525 100NCC0545 70.6 10 force lost due to fiber even more force lost angle as muscle lengthens pennative a less effective the shorter they become alter as clinicians you can really only muscle size  speed Force allows more fibers in for same amount of area  Stacked sarcomeres oneon top of another Example 25 contractile D before after contract DID DI longer 2s s M 7.05 muscles shorten more an Fa saedommere Sarcomeres sarcomere shortening activetension actin myosin interaction gstentingofmuser passivetension rggefqtncfftrfota.es rce 8nid988a 8 tension active e nEÉÉ er muscle stretched 1 slingshot frostbridges lengthening shortening re or active insufficiency gengingtingragemosteshortening hamstrings susceptible need to consider what they're doing across all joints youneed a neutralizer inhipflexion hipextensorssending counterforce  Éeduction in ability to produce force inability to produce force fatiguesettingin Dabsolute fatigue lanes oaf getS as muscle fatigues impulse increases to recruit moremotorunits message stillgoesto fatigued motor units they'rejust not able to produce enoughforce Stretched position failure  of strain Kindof sore weekor two Egg rupture position muscle force  O 00 gOlderindividual  crosssectional area typically takes around 6 weeks strength willincreasebefore muscle