From Where the ATPs Come & Where are they Used During Contraction | Energetics of Muscle Contraction

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Energetics of Muscle Contraction:
The immediate source of energy for muscle contraction is ATPs already available in the cell. It lasts for 1 to 2 seconds only. The first source for ATP generation is phosphocreatine which lasts for additional 4 to 6 seconds. Second source is glycolysis of glycogen, and it lasts for upto a minute. Third and final source of ATPs is oxidative metabolism of carbohydrates, fats or proteins. It lasts for long term. The ATPs are consumed mainly in mechanical work of pulling actin over myosin. And small quantity is used to transport calcium into sarcoplasmic reticulum, and to transport sodium and potassium across the cell membrane.

Chapters:
00:00 Intro
00:21 Expenditure of ATPs
00:56 Sources of ATPs
01:25 Phosphocreatine
01:49 "Glycolysis" of Glycogen
02:41 Oxidative Metabolism
03:12 Summary

Dr Vipul Navadiya

DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.

[OrnelaNono]

Sir, I just wanted to say THANK YOU!!! I literally found your channel yesterday and it has been SO helpful!!!

[Forger]

Thanks for such a brief and informative video ❤

[Sam-yorm]

Very informative if you to brief all such details into one video, but one request as you’ve done pretty much everything related to muscle physiology can you please cover also MUSCLE PROTEIN SYNTHESIS mechanism in detail please ? Would be very nice