Muscle contraction

[StazieTheStrange]

Guys I really recommend that you watch this video first: /watch?v=70DyJwwFnkU it's the first part of muscle contraction from the Action Potential to the binding of calcium to troponin and a breif introduction to muscle contraction. Then watch this as the cross bridge cycle is more the second part. The video I recommended is by the same guy... :) hope it helps you as much as it helped me!

[darklugia7]

Great for exam revision!

[laughnsmile96]

only caught "remains in the cocked position"

[SoxStar89]

so basically u need calcium to get a good pump in the gym :) makes sense MILK HERE I COMEEEEEEEEE ... followed shorty by amazing pumps ;) in da gym ... VASODILATION BABY!

[iDIGsetSPIKEwin]

woah woah woah say that again.. didn't quit catch it the first time.

[xfactorAD28]

great video. only thing i would say is that i thought that the energy released from the phosphate leaving the myosin head is what initiates the power stroke, which is completed when the ADP is released (video shows them occurring at the same time). regardless, great video.

[d3at4r0ut3]

Nice vid, but I thought it should say myocin instead of myofibril? Someone probably already said something but it is ok, I will say it again :)

[buzneg]

so does atp reaction cause a plasma/rocket engine type burst that throughs the spring loaded arm back?

[ladygagafan9109]

Okay so we need both Ca and ATP present in order to have the muscle contracted... correct? Just having ATP won't pull it... right?

[Stevoukos]

@ladygagafan9109 Exactly.You need Ca for the binding spots to "appear".ATP alone won't do the trick.

[breathingrocks123]

lol I've got an anatomy and physiology exam today and this is really helpful thank you so much! =D

[TheUnkownBitch]

The 9 who disliked, discovered the error

[91musicislifeismusic]

@TheUnkownBitch what was the error?

[TheUnkownBitch]

@91musicislifeismusic 0:02 It should say Myocin instead of Myofibril

[91musicislifeismusic]

@TheUnkownBitch ouh i see. thanks! :)

[UndercoverNinjaGirl]

@TheUnkownBitch what error?

[Pangjunmin]

biology itself isn't hard, it's the professor that makes it difficult

[dimseeeen]

cock

[94juvedany]

tu muori...

[94juvedany]

magnani gay

[zahrasuhardi]

i still dont get why the myosin head can perform the power stroked in the first place... maybe i should rewatch the video, lol.

[MultiJimR]

@zahrasuhardi energy derived from ATP break down into ADP and Pi (inorganic phosphate) allows it to perfrom the powerstroke, like giving a girl some loving so she'll give u a power stroke

[KadeRaegan]

Cheating naughty wives online mworld5.info

[faisal261000]

biology is lycopersecum esculentem instead of tomato

[cbnstarz]

Thank you.

[TheGreatMercedes]

Learning Biology terminology is easy when you take the time to learn the pre- and suffixes, most of which you can understand just by paying attention life.

[rayhanna90]

@TheGreatMercedes agree!..i thought i'm going to go psycho learning all these medical terminology, but now it's not that hard coz i got myself familiar with the affixes n the root words......it's not that hard so anyone who want to get medicine but are scared of how to memorize these terms, don't worry , it will all be fine...just follow your dream....

[rayhanna90]

@TheGreatMercedes @TheGreatMercedes agree!..i thought i'm going to go psycho learning all these medical terminology, but now it's not that hard coz i got myself familiar with the affixes n the root words......it's not that hard so anyone who want to get medicine but are scared of how to memorize these terms, don't worry , it will all be fine...just follow your dream....

[joshsayswhateva]

@rayhanna90 and i agree with you XD

[pikiwiki]

wow

[qhite]

he said power stroke

[jbtlabs]

Great visual work! Love the detail.

[ThEKeAnE28]

y en español xD

[acezulu]

thank u :)

[khairuleven]

seems like a battery inserted to an arm machine..

[TheBioOne]

At this moment I'm trying to learn this crossbridge cycle. There seem to be some more details, however-> Thanks a lot. I got a step closer to what is actually going on. 5*

[Shifty3runner]

slackass

[55582rahul]

This video is cool; Its easy to understand and easy to remember!

[Ikkarous]

Awesome thanks a lot

[nonocurios]

me manda este video em portugues por favor!

[fairy93tale]

yea we , too! thx for this nice explanation!!

[vfxworld]

lol,

we use this in school.

Really clear understandable.

[xplugxinxbabyx]

So, does Calcium have to move the Tm-Tn complex off the actin before the myosin can attach?

[CherryBerry1321]

uh how can Idownload this so I can put it into a powerpoint?

[SuperNewf1]

go to keepvid(dot)com and put the URL of this video in their box.

[nhoctijun]

so .. for the cross bridge, there is no need of ATP, true ?? and ATP is just for the power stroke ?? am i right ?

[xplugxinxbabyx]

The cross-bridge/muscle contraction cycle includes the power-stroke, as the myosin head must attach to the actin, which it does via a 'powerstroke' to push it into position. Once it is bound, and it 'rocks' into a more stable position, it stretches the elastic element, producing force without the need for sliding filaments.

ATP is required to release the myosin head from the actin at the very start/very end of the contraction cycle.

Hope that helps.

[nhoctijun]

thankss , :) it's very clear !!

[GoldCone123]

Oh yeah! I'm psyched after this for a good workout! HoooAaaa!

[mikenkiller]

its the best video i have seen on muscle contraction. Thanks a lot for putting this video.

[doncha1000]

our professor used the same video to expains to us!!

[bigdrm8404]

the cocked crossbridge initiates the powerstroke LMAO!!!

[rajbtor]

i powerstroked your mom last night

[nikkijinni]

POWERSTROKE!!!!

[JbUcKeYeS777]

thanks

[Beechmiester90]

Wait................what?

[MeritCullen]

I still dont get it T-T

[irontony89]

very good

[nauticapnoy12]

relaxation after a contraction also required energy. Which is ATP hydrolysis.

[fazeel007]

how can i get this full video or animation or whatever it is

[vkarody]

Will I be able to play the video from a powerpoint presentation? If so how can I transfer/upload the video onto a powerpoint slide?

[xamyxisxsnazzyx]

I'll post the instructions as a couple of comments because of the word limit!!

I did the same thing for a scene of Kill Bill for a presentation I did last year (but I didn't download off youtube first). So hopefully this works and no copyright infringements come into play :D

[xamyxisxsnazzyx]

Go to vixy(.) net, and put the vid URL in and download as a .avi file.

In powerpoint, go to insert, then movies and sounds, then click on movie from file.

then it'll be in the slide.

voila, hope I helped!!

[mindreaction]

my MOST favorite part of physiology. so cool!

[ProKatted]

mine too!

[fazeel007]

i just cant understand it

[Lifeexplorer30]

yeah me neither............

[fazeel007]

at least i'm not alone in this world

lol

[kandibee]

lol i love biology but it hates me

and i still haven't found a good site or anything that explains this well.

[blinkboypunk]

hahahahahah ATP (adenosine 3posphate) means energy (in case u don't know it), and ADP + Pi means the energy is used and the ATP with 3 phosphates changes to a 2 phosphate adenosine. the ATP is what makes the miosine move and push the actin fiber, wich makes the muscle contraction.... sorry 4 my english and my lack explanation xDD

[OhMyGEEZY]

this is beautiful.

[shaligramsharma]

power stroke is explainded best !,

the role of calcium ion is given but verry little,need to discus litil bit more.

[toastyy]

that comment below is just BEGGING for a religious debate

[felixthemaster1]

@RJL738 i know! God is amazing! all these amazing things cant ever been have made with atoms randomly joining

[wykydtron6]

@felixthemaster1 lol trolling

[AyQueChiquita]

oooh so thats what my notes meant by "powerstroke" love these vids they make it all so much clearer

[azndude444]

thxs, cool video

[ncalpena]

awesome video

[sublimeclark78]

thank you so much, seeing this helped me understand it so much better

[smside]

gooooooood

[492333]

exellent, this vid helped me understand this SO much better

[aoisenshi05]

we saw this in bio today! yay!

[lenababy22]

Thanks

[eatthebench]

rock on!

[Albasta]

Biology isn't all that hard when you can watch animations like this. The only tricky part is to learn all the terminology, meant to be more new words to learn in Biology than French A level :O

[MrCockSlut]

@Albasta yer ive always told people it was like learning a new language.

[TheCitizenM]

I FINALLY UNDERSTAND!!! thanks a lot man ...

[northdeltaa]

a muscle contration is like a twitch in a spot that you can't control?

[yazza36]

thnx awesome bigup kings school and chrisw dunn gangsta from the westside dont mess with

[royalprin1cess]

This is D best...I didn't understand a thing until I saw this...many thanks.

[mjca1987]

i'm looooooooooving youtube with this video...this reallly is helpfull 4 my test xD

[Julianandtoto]

I have a test on this tomorrow. This was helpful

[Stokstuk]

This is a very good way to show how the muscle works! Well done!

[icehawk0]

thank you you tube!

[cer726]

this is so helpful for my physiology class! thanks.

[maliath]

omg!! I've totally done that1 LAWLZ!!1!

[hmharpri]

very helpful. thanks

[cavemanl29]

great video