Sliding Filament Model and Excitation Contraction Coupling

💪🏼 FREE muscular system review unit for teachers and students on ➕PositiveSTEM. All questions are aligned to my muscular system videos. Go to www.positivestem.org and create a free account, or read my blog post for more info: justinmsiebert.com/2024/04/18...
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0:00 Intro
0:33 Excitation-Contraction Coupling
4:34 Structure of Actin and Myosin
6:19 Sliding Filament Model Stages
10:52 Recap
12:01 Test Yourself!
12:23 Straight-up adorableness
In this video, I explain how an action potential from the brain results in contraction of a muscle cells. This includes excitation-contraction coupling as well as the steps of the sliding filament model.
Action Potentials video: • Sliding Filament Model...
Synaptic Transmission video: • Synapses | Broken down...
🧠 For all my science videos and resources: www.justinmsiebert.com​/science
💻 My youtube channel: / siebertscience​

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I genuinely appreciate how clear and engaging your videos are! A huge thanks for making complex topics so accessible and fun. Your help has been invaluable!

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This is the easily clearest and best video I have come across on this subject. Thank you so much!

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Had to complete an assignment for my human physiology class based of this video lol great work!

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Haha, thanks! Hope the assignment went well!

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This is such a great explanation. Thank you!

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This helped so much as we are to know 22-23 steps to write from excitation to cross bridge and finish with reset. Very clear, thank you.

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Thank you! Glad they're helpful!

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[@SiebertScience]

Oh, thank you! Glad you like the drawings...they take a while :)

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Thank you so much for this!!! I’m studying for the MCAT and this really helped me understand muscle contraction!!

[@SiebertScience]

You’re welcome! Good luck on the MCAT!

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this really helped me for my anatomy class, thank you!!!

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[@SiebertScience]

Awesome! Glad it was helpful. Also, my daughter's name is Alondra!

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[@SiebertScience]

You're welcome! Thanks for the comment.

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And thank you x2! I appreciate it!

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I think I'm learning more from you than my lecturer

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Thanks

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thank u seriously, there is an anatomy exam coming in a few days and this video helped me a lot to understand more about what happens in the muscles

[@SiebertScience]

Hope the exam went well!

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[@rkb8100]

I had Guillain-Barré and was left with weakness in my quads. How many neuro transmitters are there that stimulate a particular muscle? hundreds,thousands,millions? And perhaps mine didn’t all return?

[@SiebertScience]

Each muscle will have somewhere in the hundreds of thousands of muscles fibers, and each fiber has one motor neuron terminal connected to it. The neurotransmitters are the tiny chemicals released from the axon terminal to the muscle fibers...not sure how many of those there are, but it's a lot!

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Not exactly. Close though.

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[@SiebertScience]

Sorry! I think you can adjust the playback speed of KZbin videos. Maybe slowing the video down could help?

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Guy is wrong. You do not speak too fast. Volume is good too.