BIO 3303 Lecture 16: Lecture 16 Muscle Heterogeneity

• School: University of Ottawa
• Department: Biology
• Course: BIO 3303
• Professor: Emily Standen

Document Summary

Twitch is a reusls from a single action potential where there is a latent period because all the elastic action has to happing. it depends on the extication contration coupling you have. One ap = one twitch where ca2+ does not come in very. Twitches can summate to get a titanic contraction much. when ca2+ is gone, the force is gone. Therefore it which allows more ca2+ to come in to allow muscle to does not produce much force. contract to its maximum potential. T etanic tens ion is maximal and continuous --that is , the mus cle is s trongly contracted for an indefinite, leng thy, chronic time interval. Mos t tetanic c ontractions are the res ult of a s eries of rapid nerve impuls es . Muscle fatigue: we burn atp very quicly as myosin and actin cycle. Twtich has tiny bit of force where the tentanus is 3 5 times as much of foce.