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Clonal selection | Immune system physiology | NCLEX-RN | Khan Academy 

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Created by Patrick van Nieuwenhuizen.
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NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at creativecommons....
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15 окт 2024

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Комментарии : 87   
@EhabAhmed-to1ol
@EhabAhmed-to1ol 8 лет назад
Both t and b cells are formed in bone marrow but t cells are matured in thymus
@paulhetherington3854
@paulhetherington3854 4 года назад
Funny chest, is so wide-- and guts area-- T U B-- influence of bones-- positions. You know nothin-- about infusion-- osmosis. Head-- flows blood down-- first. Ancient Alpha Beta-- First 2-- which means-- grids.
@birajbanker
@birajbanker 3 года назад
Tyvm for the additional info bro
@arshiatalebi3217
@arshiatalebi3217 3 года назад
Dont lie u learned that from the previous video XD
@NLaw-uo5uk
@NLaw-uo5uk 9 лет назад
I love Khan Academy Videos...You guys are the best at explaining things I need to know in a refreshing and comprehensive manner; without all the extra music, mumbling and distracting qualities that can be in other videos...Can't say enough how much you guys help me. THANK YOU :)
@nilupadushanthi
@nilupadushanthi 3 года назад
I learned statistics from Khan academy videos more than I learned from my uni lecturers! Thank you so much.💐
@jared394
@jared394 9 лет назад
T cells mature in the Thymus and originate from the bone marrow, according to my test. This is probably not too important though, thank you for the review.
@AriesHolmes
@AriesHolmes 7 лет назад
This explanation helped me so much. Its clear, step by step and emphasizes the areas where people might get confused. I used to mix up the replication wherein they will get different receptors (for diversity) with the replication wherein they will have the same receptor (for actually responding to the infection) all cleared up now. thanks
@poova06
@poova06 3 года назад
wow i literally did not understood what my lecturer said, but this changed all. thank you for this video, life saver!
@lilymoore3955
@lilymoore3955 8 лет назад
perfectly explained. thank you!
@AuggieX1
@AuggieX1 6 лет назад
Thank you… Very simple way of explaining a complex concepts.
@bengavagan
@bengavagan 6 лет назад
You are literally a life saver, missed a bit of class and this has brought me right up to date!
@dudedude9528
@dudedude9528 3 года назад
Thanks so much I was feeling very depressed because I was not understanding my textbook but now there’s hope
@lissyyy6865
@lissyyy6865 3 года назад
I just want to thank you for using easy english in the explanation haha. I’m german but somehow there is no video in german that explains this topic as good as you guys. I’m so thankful that i could understand anything you said cuz you didn’t use many complicated expressions
@NikkiPea12
@NikkiPea12 8 лет назад
Wonderfully done! I finally understand this a lot better now as it put all the little pieces together! =D Thanks.
@Johndoe3786.
@Johndoe3786. 5 лет назад
These videos are really helping me through my degree, thank you Khan Academy 👍🏻👍🏻
@ilimselyardm9698
@ilimselyardm9698 3 года назад
SubhanAllah , thank you sir may Allah bless you :)
@rockmamabaker8370
@rockmamabaker8370 3 года назад
Amazing video! Made everything clear for me! Thank you!!! 😀👍
@ordinarymind1804
@ordinarymind1804 9 лет назад
Thanks for making this video. It's awesome!
@crystallane4671
@crystallane4671 2 года назад
This helped me tremendously!! Thank you!
@ashleyhuber1610
@ashleyhuber1610 8 лет назад
Hi there. My understanding is that with B-cells (and thus, humoral immunity), APC's do not play a role. Yet in your presentation, you reference APC's presenting bacteria to B-cells. Could you clarify?
@shehreeze1022
@shehreeze1022 4 года назад
No, in this video, his drawing shows that APC's are presenting the antigen to the T-cells. Also, this is probably way overdue, but B-cells can be APC's themselves.
@nicorogervonlohengramm
@nicorogervonlohengramm 2 года назад
Wow, thank you so much, Mr.
@lauranewman1091
@lauranewman1091 4 года назад
best video, been trying to learn this for weeks
@sciencenerd7639
@sciencenerd7639 2 года назад
Wow, thanks, this is very well explained!
@emmawright663
@emmawright663 11 месяцев назад
wow this is the best video ever
@zainabsuleyman621
@zainabsuleyman621 2 года назад
Even after 8 years...thank you
@Samira-khudiya
@Samira-khudiya 8 лет назад
I found it useful and easy..thanks
@blossomenoragbon6642
@blossomenoragbon6642 8 месяцев назад
Thanks!!! This was so helpful
@saraanicole9
@saraanicole9 7 лет назад
You didn't talk about the co-stimulatory stimulus needed for T cell activation
@zainabbatool1832
@zainabbatool1832 4 месяца назад
very informative
@XxRegretzxX
@XxRegretzxX 9 лет назад
perfect explanation
@JustPiichi
@JustPiichi 10 лет назад
Thanks, I really needed this.
@forzamilan1924
@forzamilan1924 8 лет назад
an excellent video to resum Immunology .
@backstreetfan2887
@backstreetfan2887 3 года назад
thank you khan academy
@Ray-jg1bw
@Ray-jg1bw 6 лет назад
Wow that cleared things up. Thank you! :)
@VasupradhaS.H
@VasupradhaS.H 8 месяцев назад
best explanation
@notsilentobserver5064
@notsilentobserver5064 4 года назад
Is it possible that we don't have a receptor for a particular pathogen?
@SaraSiraj
@SaraSiraj 7 лет назад
Best explanation ever !
@soumyanr2442
@soumyanr2442 2 года назад
And they starting replicating like crazy😄
@CrazycruxGaming
@CrazycruxGaming 7 лет назад
You forgot T-dependent B-cells and T independent. T independent B cells are the only ones that can bind to the antigens on the bacterium's surface (epitopes like LPS and proteins. Other B-cells have to have the T-helper cells that differentiated out present antigens and stimulate them. Other than that, great video! You guys seriously help so many people!
@farbodniazi6504
@farbodniazi6504 6 лет назад
You didn't actually talk about the clonal selection theory which talks about the diversity of antibodies and how their constant portion is made from a different gene than the variable segment.
@helhkr
@helhkr 10 лет назад
thank you very much for all this valuable material. In this video you explain clonal selection and clonal expansion, right?
@bismanaeem6684
@bismanaeem6684 5 месяцев назад
Havent seen anything better yet simpler than this ❤
@sejalsiddha1879
@sejalsiddha1879 4 года назад
I needed this so much... really nice video 👍👍
@srirambhardwaj2343
@srirambhardwaj2343 5 лет назад
Thank.you.very.much.sir .
@unknown-fz7nn
@unknown-fz7nn 4 месяца назад
thank you thank you thank you
@simrankashyap5299
@simrankashyap5299 5 лет назад
Thanks sir 😊
@poojakashyap6713
@poojakashyap6713 2 года назад
Thankyou so much 🙏
@ss-nu8xx
@ss-nu8xx Год назад
You are great
@medicalstudy2931
@medicalstudy2931 5 лет назад
Hey you first tell that the dendritic cells present the bacterial pieces to B and T cells and later you tell that the B cells don't actually need the antigen presenting cells they are able to react to the bacteria directly. Is there any mistake in the first statement? BTW the video is really nice.
@shehreeze1022
@shehreeze1022 4 года назад
same confusion here
@nicodasm
@nicodasm 4 года назад
Dendritics do present to Bcs, but Bcs don`t really need that. However, it helps!
@simranchauhan7003
@simranchauhan7003 2 года назад
Awesome😊😊👏👏👏👏
@yazhiniram5443
@yazhiniram5443 3 года назад
This is amazing
@hamadalayyaf5361
@hamadalayyaf5361 7 лет назад
very clear.. Thanks ♡
@sunnyoh3927
@sunnyoh3927 Год назад
thanks a lot
@sabirsheikh7426
@sabirsheikh7426 6 лет назад
When army of same B cells or T cells are produced....then as they are same bcz they r produced by colonial section......but the antibodies produced by them or the activated T cells produced by them same?????.....and if they are same it means they require only one type of antigen so one gene codes for them???????.....r they produce different kind of antibodies????I am getting confuse about this point....plzzz tell me??????
@lydiamwasu7646
@lydiamwasu7646 7 лет назад
Thanks alot,the info is really helpful
@khaledfrihat1496
@khaledfrihat1496 5 лет назад
such a great job,thank you
@abdal-rahmansalous6032
@abdal-rahmansalous6032 2 года назад
thanks
@MasterDisaster95
@MasterDisaster95 9 лет назад
Thanx for making my life easier LOL
@nahmlj3540
@nahmlj3540 3 года назад
thank u
@sarahward5974
@sarahward5974 3 года назад
Really great, thank you :)
@faridsaid9180
@faridsaid9180 2 года назад
How about NK-CELLS?
@Silverxlife
@Silverxlife 5 лет назад
Amazing !!
@genesisperalta5963
@genesisperalta5963 10 лет назад
Amazing! Thanks a lot!
@phutijulia1067
@phutijulia1067 2 года назад
What happens after a B-cell kills an antigen?
@mawabomawabo5507
@mawabomawabo5507 9 лет назад
thank you
@arlsffa
@arlsffa 6 лет назад
perfect...
@yourfriends
@yourfriends 2 года назад
Clonal expansion & selection are two separate processes!
@PistonsFanFourEver
@PistonsFanFourEver 9 лет назад
Thank You!
@hermanfourie66
@hermanfourie66 4 года назад
If i understand the video correctly, you are saying that antibody production is just a matter of luck? And if you were not lucky enough to have a B-cell that has the correct antibody for a specific antigen, then you just die? Would you please explain this? I am super confused because this video ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Bl6vWLqL2D0.html ) kind of suggests that antibody production is not a matter of luck, but rather a matter of the body creating a specific antibody for a specific antigen, rather than having an antigen just fitting an antibody by a chance of luck.
@femi9000
@femi9000 3 года назад
6:33
@alessiamartina
@alessiamartina 5 лет назад
why is that clonal selection, I'd rather call that selective cloning... Btw thank you Patrick!! I love Khan academy
@melissas4079
@melissas4079 10 месяцев назад
the way he is drawinggg
@aprilrussano3433
@aprilrussano3433 4 года назад
Don’t B cells get activated by T cells (cd4)
@tiktokhub4298
@tiktokhub4298 2 года назад
yo the thymus is found around the neck not the sternum
@vinanguyen1832
@vinanguyen1832 4 года назад
Thought 7:28 and after was so funny lol esp at 2x speed
@marcthongvilu1676
@marcthongvilu1676 3 года назад
I guess T-helper cells don’t exist anymore
@LetsGettosubscribersWithOnlyVi
You are a life saver check out mmbone.com
@paulhetherington3854
@paulhetherington3854 4 года назад
Im-- gay, or of with! Kaldean and Koine Egyptian languages. No BDZKL-- this is, two celled! DNA-- > DZNA-- This is, not internal medicine! You should learn, language, before speak? MEDZ TDZKL-- This is, me, and my-- chest cells or, T-cells. Shoulders are, attached as the, T- branches of, arms -- lungs.
@erikarvidsson1360
@erikarvidsson1360 5 лет назад
I am quite offended, was this all that the author had to know in his med school? If this video is intended for schoolkids, please dont pretend it is medicine. You simplified it so much that many things are just wrong, you also forgot to mention almost everything. Its like putting the entire bible in a sticky note: Some dude died for other peoples sins and got resurrected by his father who lives in fluffy clouds and murders the whole world from time to time. I think Christians would not like my short version of the bible, and that is how I feel about this video.
@mohammadalzoabi3888
@mohammadalzoabi3888 7 лет назад
thank you very much
@anteater2536
@anteater2536 6 лет назад
thanks
@rheageorge2902
@rheageorge2902 3 года назад
Thankyou so much
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