A2 Biology - Mechanism of sliding filament model (OCR A Chapter 13.10)

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A2 Biology - Mechanism of sliding filament model (OCR A Chapter 13.10)

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Күн бұрын

This video shows the details in the mechanism of muscle contraction based on the sliding filament model. It is mainly about the interactions between actin and myosin and how they bring about movement. It is almost like rowing - with the actin as water, myosin head and filament as the oar and the myosin itself is the rower (except that it stays in the same place).
There are three parts to this:
1.) Stimulation - How the action potential triggers the mechanism
2.) Attachment - How the myosin head attaches to the actin and moves it
3.) Detachment - How the myosin head detaches from the actin and be ready for the next attachment
Enjoy! :)
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Пікірлер: 38

@skytube9300 5 жыл бұрын

please keep making more frequent videos as they teach me more than my teachers do

@BioRach 5 жыл бұрын

Haha thanks for watching! Things get busy around here, but I will try and make videos whenever I can :D

@MohidPvE 2 жыл бұрын

A-level exam tomorrow, paper 1 :) Every time I forget the sliding filament model I watch this vid

@user-nf2su4xq4z 2 ай бұрын

got paper 1 today lol

@minecraftblock6483 2 ай бұрын

@@user-nf2su4xq4z same bro im so cooked

@yoyo9winner 5 жыл бұрын

Ive been confused about this section for so long this year, ty so much

@BioRach 5 жыл бұрын

Haha it is not the easiest topic but certainly interesting! Glad it helps :D

@doddod5371 2 жыл бұрын

Girl you can have all this nyash for blessing me with this video .may Allah bless you QUEEN LOVE FROM CA SIXTHFORM

@FaizanA-mh4pd 3 жыл бұрын

Thanks for this. Whats not clear to me is how energy is needed for the head to go back to its original position, but energy isn't needed to actually flex it in the first place.

@annhashi1768 5 жыл бұрын

Thanks a lot. Earlier I couldn't understand this but now I can . Keep doing videos. They really worth. Good luck

@BioRach 5 жыл бұрын

I'm glad you found them helpful! Thanks for watching :)

@martynakasza838 2 жыл бұрын

I love how your videos make topics clear and easy to learn. Thank you very much

@joeeastwood373 2 жыл бұрын

Miss you’re actually a life saver

@k3nziN0 Жыл бұрын

Honestly loving your videos, really helpful!

@hafsathakur4794 5 жыл бұрын

This was an incredible video, thank you so much!

@BioRach 5 жыл бұрын

Glad it was helpful! Thanks for watching :D

@Mia-ir8lb 5 жыл бұрын

Thank you so much for your videos!! They really help. Is it possible to do a video around the patterns of inheritance topic?

@BioRach 5 жыл бұрын

I'm glad they help, thanks for watching! :D I have a few topics in mind for videos, and I'll add yours to the list! :)

@heyoletsgo5728 3 жыл бұрын

Is the flexing of a myosin filament during attachment called a power stroke? Is the movement of the myosin head back to its original position a part of the power stroke? Btw love your videos

@BioRach 3 жыл бұрын

Yes to the first one. Probably no to your second question, tho it doesn't actually matter too much. Glad you found the videos helpful and thanks for watching! :)

@sumaiyamaryam3862 3 жыл бұрын

This video is a life saver! Thanks a whole ton

@munaaliii 3 жыл бұрын

Hey miss, the process is clear But when is the muscle fibre contracting and shortening.. is it after the myosin changes shape moving the acting along with it and the sarcomere shortens then myofibril and hence the whole muscle fibre shortens.. that is after many sarcomeres have shortened one after the other. Thank you pls correct me