In this video, Dr Mike explains how skeletal muscle contracts via the sliding filament theory (mechanism).
Watch out for me saying “clavicle” when I should say “scapula”. It’s a slip of the tongue I have.
Having a look at the larger muscles of the shoulder region, and talking about where they are and what they do (while trying not to spend too much time talking about inervation or detailed attachment sites).
Music by Jahzzar:
http://freemusicarchive.org/music/Jahzzar/
(Licensed for use under Creative Commons Licenses, see above links for details).
Where are the pelvic floor muscles? What are they? Where do they attach? What do they do? How can you strengthen them? Let’s have a look at some more pelvic anatomy.
Subscribe for more: https://goo.gl/iDvxKs
In the Operation Ouch Secret Lab, Dr. Chris and Dr. Xand explain why your strongest muscle might not be what you thought it was!
Operation Ouch is a science show for kids that is full of experiments and biological learnings. In this educational TV show, twin brothers Dr. Chris and Dr. Xand do science experiments for kids, to explain us how the human body with all its different parts and systems works, and how medicine and medical procedures can help. It’s Biology for kids in a fun format!
You can buy the book here https://www.amazon.co.uk/dp/B00CIVLZYY/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1 and download the series here https://itunes.apple.com/gb/tv-season/operation-ouch-season-3/id1164855856
Join the Amoeba Sisters a they explore different muscle tissues and then focus on the sliding filament theory in skeletal muscle! This video also briefly talks about muscle naming, some vocabulary (such as agonists and antagonists) before focusing on the sliding filament model. Video also mentions general roles of tropomyosin and troponin.
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Table of Contents:
00:00 Intro
0:39 Muscle Tissue Types
1:58 Muscle Characteristics
2:33 Skeletal Muscle Naming and Arrangement
3:26 Actin Myosin and Sarcomere
4:32 Sliding Filament Model
6:55 Tropomyosin an Troponin
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Corrections:
7:42 Oops, “A” should be lowercase in those little circles as calcium ions should read Ca2+
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Factual References:
Betts, J. Gordon, et al. “10.3 Muscle Fiber Contraction and Relaxation – Anatomy and Physiology 2e | OpenStax.” Openstax.org, 20 Apr. 2022, openstax.org/books/anatomy-and-physiology-2e/pages/10-3-muscle-fiber-contraction-and-relaxation.
Urry, Lisa A, et al. Campbell Biology. 11th ed., New York, Ny, Pearson Education, Inc, 2017.
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Further Reading Recommendations:
What about I and A bands? What actually initiates the power stroke? How does calcium get released and from where? Remember, there is a lot more detail! We recommend this page from Openstax to learn more:
https://openstax.org/books/biology-2e/pages/38-4-muscle-contraction-and-locomotion
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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky’s certification and experience in teaching biology at the high school level. Amoeba Sisters videos only cover concepts that Pinky is certified to teach, and they focus on her specialty: secondary life science. Learn more about our videos here: https://www.amoebasisters.com/our-videos
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Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
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Our intro music designed and performed by Jeremiah Cheshire.
End music in this video is listed free to use/no attribution required from the YouTube audio library.
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TRANSLATIONS:
Spanish Subtitles Translated by Jeremy García
We gladly accept subtitle translations from our community. Learn more here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles.
We also have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Video Rating: / 5
