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Source: Bob Grove
(Note - there is a 11 second delay before the video starts) A video cast of one of my (Prezi) lectures on the microscopic anatomy of skeletal muscle. The video starts with a short introduction on the types of muscles as well as the basic function of muscles. You can check out a ppt version of this below
Source: Bob Grove
We're kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model. Your skeletal muscles are constructed like a rope made of bundles of protein fibers, and that the smallest strands are your actin and myosin myofilaments. Its their use of calcium and ATP that causes the binding and unbinding that makes sarcomeres contract and relax.
Source: Crash Course - Hank Green
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Source: Microbiotic
sliding filament theory of muscle contraction - created by Sara Egner as part of UIC's biomedical visualization program
**Some of you have noticed that there is a mispronunciation in this animation. It's true. ATP stands for adenosine triphosphate, and ADP for adenosine diphosphate. Please don't be confused on my account.
Source: Sara Egner - UIC's Biomedical Visualization Program
Using the "Human Body Atlas - Visible Body" program, we look at the muscles that make up the head and neck.
Source: Human Anatomy Atlas: http://www.visiblebody.com/index.html
Using the "Human Body Atlas - Visible Body" program, we look at the muscles that make up the shoulder & back.
Source: Human Anatomy Atlas: http://www.visiblebody.com/index.html
My video cast looks at muscle fatigue and oxygen debt in working muscles. There is also a discussion of the two types of muscle contraction; isotonic and isometric. Muscle tone and a look at resistance training is also discussed.
Source: Bob Grove
A look at the different movements associated with muscles. Also a look at terminology such as origin, insertion, etc...
Source: Bob Grove
Hank calls in a friend to do his push ups for him today to explain how skeletal muscles work together to create and reverse movements. Hank and Claire also demonstrate the role size plays in motor units, the three phase cycle of muscle twitches, and how the strength and frequency of an impulse affects the strength and duration of a contraction. This episode also explains twitch summation, tetanus, and isotonic vs. isometric movements.
Source: Hank Green and Crash Course
Always thought provoking topics from ASAP Science...
Source: ASAP Science
Here's the video referenced by ASAP Science in their muscle video...
Source: Vsauce3
Source: SciShow