Added: 4 years ago
From: neurocirujo
Views: 144,832
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  • fuck money get musclecontractiontheory

  • now it make sense to me after watching this! ty

  • thankyou :) this helped so much!

    my a&p teacher dosent teach us shittt !

  • now i get it, thanks

  • lol my TA showed this in class

  • Y U NO MAKE SENSE SCIENCE?!?!

  • Helped soooo much thanks !

  • It could have been a bit better (using the names of the sites that the Ca ion attached to-tropin- and the name of the thing that covered the cross bridge receptors- tropomyosin), but it was pretty darn helpful, I had a gap in my understanding and this helped me put it together :) Thanks!

  • so 2 ATPs are hydrolysed in one cycle?

  • @bakedboy8 only one is used. the 1st one causes the power stroke, the 2nd stores energy w/ the recovery stroke, in which it is used in the 2nd cycle

  • Excellent! I had to take some time to find something that could illuminate simply the details of sarcomere contraction and this was the most coherent video I found.

  • andrewtheman19; lactic acid is the product of reducing pyruvate, which enables the oxidation NADH to NAD. Anaerobic respiration is essentially glycolysis with that one extra step, the reforming of NAD allows gylcolysis to continue and ATP to be produced (albeit it in smaller amounts). The electrons do not need to be accepted as respiration does not get as far as the electron transport chain (or even the link reaction or kreb's cycle for that matter) as there is no substrate to enter (pyruvate).

  • thanx muxh!! that helped a lot

  • this video totally rocks, ms morrison is teaching us about this in my class right now! we used laptops in class because we r awsomee!! i love exercise science and the sliding filament theory is my best friend!!

  • huh.

  • hey @ atitghoda..u frgt to add accumalation of too much lactic acid in that specific are of the body...

    n ...im havin a bio exam tommo..dont kno a shit abt mucle contraction till in just saw this awesum video!!thnks for postn it

  • cramp is caused due to production of the lewis p factor due to the unavailibility of o2

  • GREAT

  • thanks!

  • thanks for posting you just condensed like 14 pages into 2 min (:

  • sooooo helpful!! thank you for posting!!

  • Cramps are also caused by lactic acid buildup in your muscles, which is caused by the muscles' inability to rid themselves of carbon dioxide, a waste product of used oxygen. :D

  • Right, because your mitochondria are going crazy trying to keep up with the energy demand so they run out of oxygen molecules to dump the electrons on....so what is the electron acceptor that produces lactic acid..? I can't remember....

  • sweet!

  • What causes cramps?

  • A cramp is caused by a lack of ATP.

  • i love you again....^_^

  • great video..helped alot!

  • superb explaination

  • At the risk of repeating someone else's comment, thank you for posting this. I really needed to see it.

  • Thank you for posting this.

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