Cell Junctions | Cells | MCAT | Khan Academy

Learn about the three major types of cell junctions and their functions. Created by William Tsai.
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[@annaliesebilsak5465]

Wow the way college explains it is so difficult to understand. This helped me a TON. Thank you so much!

[@magranin7319]

That’s so true and what’s even worse is the pace they teach at.

[@dailymagic7035]

this channel is a blessing ... thanks for all of this, it really helped me

[@favoritesfavorites8334]

Thank you for making this topic wayyyy easier! 😃

[@richardstarsouski4698]

awesome this was exactly the information i needed. thank you so much

[@anterraboom]

Thank you for this video! The lecture material was just sliding off my smooth brain, and this helped it to stick!

[@kandice458]

brief and informative, thanks!

[@aneripatel1759]

This explanation by you is really helpful.. thnk you so much

[@mariahenriquez9563]

Loved this, finally understood this!! Also i love your voice

[@user-dy9zh6qb3r]

Thanks man , it was hard for me ,but now I know it!

[@nathanielparrish7473]

Most helpful video on this subject that I've found, thank you

[@Matt-tv5ww]

Good explanation, very helpful. thanks!!

[@YasminA-jm9zs]

Explained better than my book! Thank you so much.

[@alking_am842]

Man, this is amazing! Now it's so simple

[@baraasan2285]

Omg i was suffering from this information you made it super easy that video did show up to me from heaven thank you soooo much❤❤

[@mafegutierrez98]

That moment when you realize the guy that made the video was your old 10th grade chemistry teacher

[@mycaroxas4088]

comment i was looking for lol

[@peachyx5081]

omg?? i-

[@amanjeet0_0]

Last reply 3 years ago damn

[@Cutmylegs]

Very simple. Thanks!

[@guyrogen9911]

5 minutes of pure elegance, my squire

[@zannatul23]

so far the best video on cell junctions

[@Gilleto]

you're literally saving my ass, i am about to give an exam on Biology in a few days and you make the process of learning 10x times faster

[@LogicHungerBread]

Clear and to the point. Thank you

[@raquelisela]

Amazing. it is perfect.

[@katerynasmith5162]

thanks ! good

[@ranaktv]

Didn't mention Hemidesmosomes or Plasmadesmota. Also I would recommend to mention and explain Anchoring Junctions and Communication Junctions.

[@melbournemeliodas215]

RanakTv propably in the next video.

[@hermionegranger3141]

Basically, communication and gap junction is the same.

[@thomasgreaves2859]

@@hermionegranger3141 Fax

[@thanmayeeg6136]

Anchoring junctions and desmosomes are the same thing so are communication and gap junctions

[@Kashmaful]

thank u! it was so helpful!!!

[@lilly3510]

very helpful, thank you!

[@sarawingate3299]

so helpful, thank you!

[@mondomusic1284]

Are gap junctions permeable like desmosomes or are they water tight in between them?

[@mka6199]

just a bit of added info: desmosomes bind intermediate to intermediate from one cell to another. and Zonula adherens actin to actin. these both make up the anchoring junction. :D

[@ankitpaul9446]

+WILL BIRD just a more bit of added info : In desmosomes (macula adherens) cells connected by keratin like protein instead of actin. :D

[@abhijeetmukherjee3128]

+Just a more more bit of info:- keratin like protein in the zonula adheren forms microfilaments and the actin like protein in the macula adheren forms tonofibrils. :D

[@magranin7319]

Just a bit bit of added info: the thin linker protein filaments extending from plaques in desmosomes that hold adjacent cells together are called cadherins.

[@NadirIdrioui]

thank you so much!!!

[@bayanali3337]

wow your explanation is so easy and wooooooow

[@melbournemeliodas215]

Is this comparable to different cells working together? Like for example cells that are only for liver and cells that are for teeth? Is our body an ecosystem as well for our cells?

[@tamatherelmahdi7100]

Wow! So helpful :D

[@mohmmedziaziaey8446]

Awesome!

[@user-gy6tt3bv5c]

thank you for helping

[@amaboateng390]

Thanks soo much

[@OyagiShuka-]

thank you sooooo much for this video

[@logeshkumar4490]

thank you it very useful

[@ManishSharma-hg7si]

thank you so much! :)

[@Blaqunicorn]

Thanks a bunch!! :)

[@hazemelnahrawy2715]

Thank you .

[@MrCrimsonBubble]

Interesting!

[@strenght755]

What is the meaning of stress in these scenarios. ( skin and intestine)

[@nuzhatahmad2997]

Thanks 👍

[@fatimaaamer9635]

Thanks 🦋

[@tiffany5333]

Thank you:)

[@suilanwer6898]

Thanks

[@zeinabfarhat1920]

King!!! ❤️✨🙏

[@lamaaldakhil9290]

What’s the difference between zonula&desmosome(macula)?

[@rucelle15]

thankss

[@zemasound5948]

thank you!

[@tnetennba2053]

great video

[@alaaaldeen6498]

Nice explanation

[@GFreshMac]

This is a little to general

[@Andy-km1xp]

Greg Mac too*

[@gustavochavez7141]

tbh I was thinking the same thing, but now that I think about it its def. better for the video to be like this because now when I read my book is 10x easier to memorize the finer things not mentioned here

[@TimothyToluwalope-fc2pd]

😂😂

[@MrPangulo007]

Can someone tell me what major I need to do this and free research?

[@denissemedina4619]

What’s the difference between spot and belt desmosomes?

[@meliaa3437]

thank you

[@Drkaiser123]

Thanku

[@danaishappy]

some ions can pass through Tight junctions - Magnesium for example. Tight junctions are not completely impenetrable

[@magranin7319]

Yeah, that’s right! Some are leaky and allow certain ions to pass though but the majority aren’t and so they are known as such.

[@asherlee9380]

hmm this video very educational. 9/10 stars

[@asherlee9380]

thanks u i agree

[@Ahmad_Salameh]

What type of cell junction in the BBB?

[@sureshrathi2731]

nice

[@loueybai7635]

Weakening of junction between cell and trophoblast membrane : how can u break it

[@Linkfan007]

desmosomes, you mean as in "anchoring" junctions, right? Cuz desmosomes are not in my notes for types of junctions, anchoring is.

[@IbrahimAROthman]

what about zonula ?

[@OMGitsSEVEN]

Desmosomes is also known as an anchoring junction., that's what it's called in my biology book chapter 4.20

[@360tamiltips]

Desmosomes is only a one type of anchoring junction

[@Linkfan007]

ok I was about to say, lol. I was gonna ask, "desmosomes, you mean as in "anchoring" junctions, right? Cuz desmosomes are not in my notes for types of junctions, anchoring is." I'm glad to know that's what he means. lol

[@Phoenix-np1iu]

wait so are desmosomes tunnels too?

[@nronaghan]

Tight junctions are not water and ion tight

[@Moonlight2023]

can i give you my tuition instead? tysm

[@marksimpson7955]

What is in the Greek prefix "hemi" of hemidesmosomes made it different from the desmosomes?

[@marksimpson7955]

Anyone? Asap!

[@mohamedalzahwibasheer1689]

that what I coal it great work😃

[@zannatul23]

call*

[@shirsha1110]

zannatul Zan

[@kpopcornkris_wu1435]

What about adhering junctions

[@shanthala1345]

Ikrr.

[@godhelpme8977]

Hi

[@fckit312]

Adhering junctions are called desmosomes.

[@rk-mk5ll]

@@fckit312 no both are different desmosomes are connected by cytoskeleton and adhering junction by actine microfilaments

[@aayushsharma5700]

Desmosomes : cell to cell adhering Hemidesmosomes : cell to basement membrane adhering

[@craerae]

Easy but not enough

[@yamalsharif9843]

i know that sodium and other ions cant flow between cells in intestines cause there are epithelium tissue so ions flow across the cells.

[@kalkidanberhanu7708]

Great overview!

[@dharmrajhatria2297]

Why don't the water then move in the body from skin?

[@muskansiddikee2171]

Hi Khan Academy member just to inform you that this video is not on the App

[@Arya1924-c1z]

The written words are not clear

[@User-to7nb]

Why cant this guy be my professor

[@kingfisher4775]

Audio quality is too much poor

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Uhlaallalalalalalalallalal

[@Wombola]

anyone else here trying to learn about sql?

[@rejinagare8828]

they kinda??? really??

[@sumairamajeed9763]

Not good as I expected

[@soamazing7027]

Great Video! (Jesimiel Millar Fernåndez) 1M981