Wave Summation, Treppe & Tetanus | Muscular System 13 | Anatomy & Physiology
13.7 هزار بار بازدید -
4 سال پیش
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How is an electrical impulse
How is an electrical impulse from the nervous system converted into force production in the muscle cell? I explain the role of the motor unit, the importance of Calcium (Ca2+) ions, and the role of actin and myosin filaments in the cross bridge cycle. Then I outline the different impacts on contractile force production from different frequency of electrical stimulus or action potentials. These can produce single twitches, wave summation, treppe (unfused tetanus) and fused tetanus.
[00:00] Start
[00:15] What is a Motor Unit?
[03:42] Review of the Cross Bridge Cycle
[07:13] The Three Phases of A Muscle Twitch (Latent, Contraction & Relaxation periods)
[12:43] Single Twitch
[13:20] Wave Summation
[16:24] Treppe (aka Unfused Tetanus)
[18:30] Fused Tetanus
#SlidingFilamentTheory #CrossBridgeCycle #ActionPotential
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4 سال پیش
در تاریخ 1399/07/09 منتشر شده
است.
13,706
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