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

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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.

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!

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I've watched five different videos explaining muscle contractions and I can finally move on to the next topic lol I really struggled with this concept until professor dave does what he does best...explain!

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Thank you so much for this! I was so confused about muscle contraction but the way you explained it made so much sense!

My professor links your videos with our modules.

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A few minutes in, you reach knowledge equilibrium where your short-term memory is forgetting recently learned terms as quickly as it is acquiring new ones.

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Clearly explain the complicated muscle contraction! Thanks Prof. Dave!

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I'm confused about one thing: muscle hypertrophy training causes hypertrophy of both muscle and neuromuscular junctions. If a quarterback wanted to get better at throwing more precisely, would the increase in NMJs from hypertrophy training allow the new muscle fibers to already coordinate their throws like the older muscle fibers, or would they have to train more in order to build coordination between the new muscle fibers and NMJs in order to make their new muscle fibers coordinate throws as well as the older muscle fibers?

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