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This video covers the levels of organization of skeletal muscle, from organ (muscle) to tissue (fascicle) to cell (fiber) to organelle (myofibril) to molecule (myofilaments). At the end, I explain the basics of how actin and myosin work together to contract a muscle.
0:00 Intro
0:15 Muscle (organ level)
0:54 Fascicle (tissue level)
1:16 Fiber (cell level)
4:01 Myofibril (organelle level)
4:56 Myofilaments (molecular level)
6:13 Sarcomere and how filaments contract a muscle
8:08 Recap
8:53 Quiz Yourself!
9:42 Mr. Siebert tries to be funny and fails
Here's my Sliding Filament Model video: https://www.youtube.com/watch?v=4oOspJKunCQ
www.justinmsiebert.com
www.youtube.com/siebertscience
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Image used:
Found at: https://courses.lumenlearning.com/cuny-csi-ap-1/chapter/muscular-levels-of-organization/
License info: Unit 6: Muscular System (Module 18). Authored by: Open Learning Initiative. Provided by: Carnegie Mellon University. Located at: https://oli.cmu.edu/jcourse/workbook/activity/page?context=43488f3780020ca60140b159062e6e31. Project: Anatomy & Physiology. License: CC BY-NC-SA: Attribution-NonCommercial-ShareAlike