The Mechanism of Muscle Contraction: Sarcomeres, Action Potential, and the Neuromuscular Junction

We've learned about the types of muscle, including skeletal muscle, and we know then when these muscles contract, we are able to move our bodies around. But how exactly does this happen on the molecular level? There is an astonishing amount of chemistry happening to make this work, so let's dive into those sarcomeres and take a look at the neuromuscular junction!

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[PrettyDocAJ]

I love how a confusing 2 hour class was summed in an easy 12-minute video! Thank you so much!

[thefenerbahcesk]

A long time ago, when I was in the hell known as organic chemistry, I used to watch this guys videos. Now I'm watching his videos for the MCAT.

[mesozoicperiodvlogs]

I just wanted to thank Professor Dave for helping me succeed in my scientific studies. I am a pre med student struggling to understand the complex inner workings of muscle contraction. I have been studying for at least eight hours now and i am absolutely exhausted, but this was a good final lecture to finish off the evening, and i will be returning back tomorrow to watch this video and others hes posted which are related to it., .thanks again Dave, we all sincerely appreciate you!

[reisswilliams]

2 hours of lecture, 1 hour of class asking questions, 1 hour of review next class... Students confused.
Watch this 12 minute video. Concepts understood.

[aliyawilliams]

PROFESSOR DAVE sir you just saved my life. No amount of 'thank you's' could amount to how grateful I am for your videos!!

[laurenk]

Totally cleared things up, my Anatomy and Physiology prof couldn't teach this well in the hour and 15 minutes I spend in that class.

[unknownpitch]

I'm a zoology student ...
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This is very easy and super details.
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[houmamkitet]

I wish youtube allowed us to like a video multiple times, everytime you finished a point i went to press the like button only to realise i already pressed it (this happened multiple times)

[chubbybunnyization]

i hate learning about this type of thing so much because of how much of it needs to be understood on a more conceptual level. But your video and explanation is phenomenal. I still hate this subject matter, but thanks to you I now have a fighting chance of learning it all.

[doricevalery]

Just hours from my exam and I find this really helpful. Thank you professor Dave😊

[princesszinka]

So clear and interesting. Thank you, Professor.

[Sam]

I'm only on 4:26 and this is already so informative and reinforcing my knowledge, thank you so much!

[alexanderdrummond]

If my professor taught this clearly I could keep up with class

[Dhskzhsjsozb]

Thanks a lot professor ! I'm a french biology student and your videos help me have a more global vision and understanding on phenomenas,

[myunaestheticlife]

I watched 2 hours of lecture videos but learned more in 12 min. Thank you so much !!

[rebeccagonzalez]

Seriously such a helpful video! I appreciate your work so much and I know countless do as well!

[soniakay]

Learnt this last year in 11th Grade, and this recollection was just awesome, even though it's all a lot! :D

[muzamilkelam]

Watched it in 2018 for my 10th grade. Again in 2020 for my 12th grade and now again watching this for MBBS.

[RapidBlindfolds]

not only easier to understand than a lecture, but absolutely fascinating

[Daesma]

I learned from these videos more than I've ever learned on biology lessons. Not that our teacher was this bad but we had a lot more basic lessons. I keep learning more and more each video..