Wave Summation, Treppe & Tetanus | Muscular System 13 | Anatomy & Physiology

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 ___________________________ Become a Patron! Can you spare £3 to help me make more of these videos? Head over to Patreon and I'll throw in an A&P revision booklet for free: patreon.com/miketylersport Find my learning resources shop here: www.tes.com/teaching-resources/shop/miketylersport Twitter: twitter.com/miketylersport Website: www.miketylersport.com/ Patreon: patreon.com/miketylersport