The Force of Muscle Contraction
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- เผยแพร่เมื่อ 11 ต.ค. 2024
- Muscles work by contracting, or in simpler terms, shortening. When the muscle shortens up, it will pull the bone it is attached to and movement happens. But how come some contractions are stronger than the others? What are the factors that affect the force of muscle contraction?
In this video, we will discuss 4 factors affecting the force of muscular contraction: the number of the muscles, the size or the length of the muscles involved the frequency or strength of stimulus, and of course, the degree of muscle stretch.
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---Credits----
Music: Pond5.com
Visuals: canstockphoto.com
pond5.com
shutterstock.com
Contributing writers and video editors:
Ricardo Perez
Michael Kostikin
Victor Onyino
Reference & Resources:
Squire, J. M. (2016). Muscle contraction: Sliding filament history, sarcomere dynamics, and the two Huxleys. Global cardiology science & practice, 2016(2).
Watanabe, S., Fukuhara, S., Fujinaga, T., & Oka, H. (2017). Estimating the minimum stimulation frequency necessary to evoke tetanic progression based on muscle twitch parameters. Physiological Measurement, 38(3), 466.
SANDOW, A. (1965). Excitation-contraction coupling in skeletal muscle. Pharmacological reviews, 17(3), 265-320.
Ebashi, S., & Endo, M. (1968). Calcium and muscle contraction. Progress in biophysics and molecular biology, 18, 123-183.
(Ebashi & Endo, 1968)
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Helpful video-Thanks
THANK YOU QUEEN this was very helpful.
When I went to school we never had BACKGROUNG MUSIC competing with the instructor. Whoever thought music is a good idea alongside instruction and whoever thought their idea of good music is MY idea of good music. This video is a FAIL, and I wanted it to be a BIG success.
Great video! Thank you for your time and information!
You are amazing
great! I have a question, how a nerve impulse can be more intense than another nerve impulse ? I mean does a high intensive nerve impulse mean it has a greater flow of ions through the axon's membrane ?
Thank you. I have a question. I am trying to measure forces of the abdominal wall. Do you have an idea?
great video, good details
Can you do a video on how to use a stethoscope to listen to heart sounds? :)
That would be a fun video! Thanks for the request!! See you soon!
Thank you!! Looking forward to it!! :)
Your welcome!! Keep the request coming :D
Could you maybe also include how to take an apical pulse? :)
Good 🧡💙💜💛💚
I get it every day ☹️ do you know why it happens to people every day