In my anatomy class multiple fiber summation is called multiple motor unit summation or simply recruitment. I’m glad I came by this video, it was very helpful thank you
@@NonstopNeuron Yes, I understand they are different. Tetanus is contraction without relaxation. Your video posits that it is Ca++ which leads to the relaxation of the myosin heads, however I was under the impression that it was ATP attaching to the myosin filaments which led to their release of Actin, thus relaxation. Ca++'s role, to my knowledge, is only to bind to the troponin in order to move the tropomyosin out of the way of the Actin's active site.
You are mixing up two things. You are right that ATP attachment causes release of myosin from actin. But till the myosin binding site is uncovered, the myosin will keep performing the cross bridge cycle. (i.e. keep consuming ATPs). It's decrease in calcium level that causes covering of the myosin binding site. This prevents the cross bridge cycle and therefore relaxation. Please watch my video on excitation contraction coupling and cross bridge cycle. I hope it helps.
Finally I can understand what a twitch means and the relation to recruitment...I'm so glad I found this video. Thank you
Thank you sir...
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Thankyou so much❤️ This made the whole concept so clear🎉
In my anatomy class multiple fiber summation is called multiple motor unit summation or simply recruitment. I’m glad I came by this video, it was very helpful thank you
Amazing sir. Amazing.
Thank you. This is great.
Great and crisp explanation 👌
Excellent
Very nice voice.can hear calmly.
Thank you so much 🙂
Thank you. God bless you
Super easy to understand becz of your clear pronunciation and explanation❤
Wow nicely explained thank you
Needed this for my EXS 455 class. Professor was using a balloon analogy that was not hitting at all
Lol
Thank you!
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Thanks!
It's sooo perfect
Your videos are awesome
Excellent video! I'm so glad that I came across your videos. So easy to follow. Thank you for sharing your knowledge with us!
Most welcome. I hope you enjoy all the videos.
Thanks a lot 🌹
Thanks for this lesson. Very visionary
Thank you sir.
May God give you guidance towards Islam. Amen.
Thank you sir
Thanks
Very informative video ❤
Great 🎉
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I like the voice
Finally… so happy to hear a postive comment regarding the audio. Thank you.
I think I'm in love with you.
I thought it was the ATP that caused muscle relaxation and it is a lack of ATP that results in tetanus, or rigor mortis after death?
tetanus and rigor mortis are different things.
@@NonstopNeuron Yes, I understand they are different. Tetanus is contraction without relaxation. Your video posits that it is Ca++ which leads to the relaxation of the myosin heads, however I was under the impression that it was ATP attaching to the myosin filaments which led to their release of Actin, thus relaxation. Ca++'s role, to my knowledge, is only to bind to the troponin in order to move the tropomyosin out of the way of the Actin's active site.
You are mixing up two things. You are right that ATP attachment causes release of myosin from actin. But till the myosin binding site is uncovered, the myosin will keep performing the cross bridge cycle. (i.e. keep consuming ATPs). It's decrease in calcium level that causes covering of the myosin binding site. This prevents the cross bridge cycle and therefore relaxation. Please watch my video on excitation contraction coupling and cross bridge cycle. I hope it helps.