Biology - How the Kidneys Work - (Kidneys Part 1/3) #27
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- Опубликовано: 5 фев 2025
- This video covers:
The 3 main functions of the kidneys:
1) removing waste,
2) regulating levels of ions, and
3) regulating levels of water
How the kidneys can achieve all of this using filtration and selective reabsorption
How anti-diuretic hormone (ADH) is used to control water levels
Exam board specific info:
AQA - Separate science only. The ADH part is higher tier only.
IGCSE - Separate science only
Edexcel - Separate science only. The ADH part is higher tier only.
OCR 21st Century - Separate science only. The ADH part is higher tier only.
OCR Gateway - Separate science only. The ADH part is higher tier only.
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• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video
Bro, I can't thank u enough for all of these free lessons I love your video’s and they literally got me an A in chemistry even tho I know you don't make any profit from this. God bless you man your an amazing person and very kind and thank you again
Hey thanks for such a lovely comment! Really great to hear you’ve found the videos helpful - and we really appreciate your support! Good luck with all your work 🙌
they earn ad revenue so they do technically earn from this but great stuff either way
@@richasocool a year ago he had 30k subs...so no he didn't earn anything.
@@Cognitoedu im with that guy. thankyou so much for what you do
@@eragon1378 you only need 1000 to get revenue
cognito - i just had my mocks and I got an average of 90% on all my sciences solely due to your channel. I really appreciate your help!
Post-Video quiz:
1. What 3 things do the kidneys regulate? (0:05)
2. What are the 3 main jobs of the kidneys (0:24), (0:50)
3. What is deamination? (0:38)
4. Why is water regulation important? (1:57)
5. What are nephrons? (2:50)
6. What are tubules? (3:00)
7. How are water levels regulated in the body? (4:29)
8. What is ADH and what does it stand for? (4:56)
Thanks bigman really helpful
matt!! thanks!!
bless you
Thank you !!
thank u so much i helps alot
i don't know how to thank you for these great lessons... these lessons made me love biology and i scored 86 in my bio exam... keep up this great stuff 🙂
Really happy to hear it helped, thanks for the comment!
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/b2-gcse-aqa-h-t_4.09. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom
Already done :)
You guys are genuinely awesome! It took me hours to understand this for my unit tests throughout the year and now all I had to do for my mocks was watch your videos once or twice. Thank you so much!
Thanks Foteini, we really appreciate it 😊
I love how you keep your car in your house...anyways, COGNITO YOU DA BEST!!! People like you are the true heroes of our civilisation.
Definitely the best teacher on RUclips I have ever seen. Thanks for these videos.
Let’s goo we all have our paper 1 tomorrow Tysm and good luck inshallah we do well ❤️
u didnt need any of this for paper 1... its all paper 2
@@livsmeasservy3334 exactly 💯
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@@livsmeasservy3334😂😂
Thank you so much for this incredibly well-explained educational video! Your clear and concise delivery made it easy for me to grasp the concepts. I appreciate the effort you put into creating valuable content. Keep up the great work! 👍
I appreciate ur work it helped me a lot and I passed my mock exams and I finally got a phone so once again thank you 🙏🏽 😊☺️
you guys need to make textbooks, your drawings are amazing
aw thanks ifesjournal!!
I was just about to say the same thing
Simple easy explanations
❤❤❤
Thanks I have external exam coming up really soon this has helped me thanks
did you pass
Did you pass?
@@nemesiz762 he should’ve as this video is the six marker
that house cleaning analogy made me understood EVERYTHING. i was so confused why dont the kidneys selectively absorb everything in one go at the renal tubule but the house analogy made everything clear
2:40 Never in my life, thought I would go like 'Aw these kidneys are soOo cUte!'
my biology gcse is in two days, and i've missed a few important lessons but thanks to your videos, they are really good at making me understand! i don't have high hopes for an a or a*, but i'm hoping for a b!!
Good luck! Im sure you're gonna do just fine
@@rockstormv3911 thank you!!
@@jessie07 howd it go. btw i dont even do this just enjoy learning
@@mynameispie8442 honestly, i think it went great! not too hard, but def not easy. just waiting for results day to see what grade i get :)
@@jessie07 what were your results in biology I hope you did well and got a good sixth form
Cognito Thank you so much for your videos that you post. When we were learning about the kidney my teacher warned us that it would be the hardest unit ever. At first I believed her but after seeing your amazing videos you made it seem so easy❤❤❤
Man I love this channel
Aha thank you for your support! Really glad you’re finding the videos helpful 🙌
Same here mate
thank god there is this video i accidently left my papers at school and there's going to be a pop quiz tomorrow im so glad this video exist tho some infomation i havent learnt yet its still good to learn it in case
this guy deserves world fame
Thank you so much for these videos! I am a yr 7 doing my GCSEs early and you have saved me❤❤
These videos really help me understand the topics covered. Thank you.
u got paper 2 tmr?
I love you,Inshallah you will get what you deserve granted to you. Youre the best person.
You're the best, I salute you. Your teachings makes me understand best. Thank you so much 💓
An amazing, compact and thorough explanation, thank you so much!
These are soo goood even my teacher shows during class! Keep up the good work!
I forgot about my kidneys until i had a kidney functton test. Now i know to treat them better.
Better explanation then my older brother and my school teacher and this vedio is very good and thanks for explaining it makes me understand alot
Beacause of this i passed my biology final examthank u
2 different professors and each one took 2 hours, and you beat them in 7 minutes
my bio exam tmrw, guess i’ll always be here eh.
I cant believe I learned so much in 7 minutes, thank you so much
Thank you so muchh! May God richly bless you❤
Thank you so much for this youtube channel. I love it so much
Omg this is really helpful thank you!! The lil drawings are so cute🥺
Aha cheers! Glad it was helpful 😁
Amazing video, the video explains each and everything 👍👍
U are the best channel
these videos r goated
The drawings are sooo good and helpful. Keep up the work! (And give your artist a raise! :) )
Thank you, really appreciate you taking the time to say! - Tom
Thank you so much I have 3 tests tomorrow so didn’t really have time to revise for them all. But your videos are very helpful.
Thanks Joanna, hope your tests go well!
did you pass??
@@phantomtigers3465 yesss
@@joannafound let's gooo
In 2:27 how is the cells remove sweat when they need the water (the diagram on the right )
Lol the seismometer that was in the house at 4:20🤣
Thanks bro how you paid your time to understand me useful lessons in this channels
hi cognito ure videos are simply amazing litrally covers everything amazingly
Thanks Maham, glad you're enjoying them 👍
Cognito- the best visual explanation in the world 😎😎
Thanx so much 4 ur lessons
anyway thanx 4 the videos they really help!!
Thanks for your guidelines!!!!
hi i want to know if kidney has already absorbed glucose (during the first stage ultrafiltration) why would it reabsorb glucose again (during selective reabsorbption stage)
the kidneys have a filter, and as glucose is fairly small in size it passes through the filter, where blood cells and proteins do not. But as the body needs the glucose, it is selectively reabsorbed. It's not a perfect system, basically the kidneys don't really want to absorb the glucose but because its so small it passes through the filter along with the mineral ions, urea, etc.
THANK YOU SO MUCH WOW
I f**king love this channel ❤
Thank you so MUCH !!!!!
good luck today aqa
good luck to you too
Awesome, thank you!
really helpful. can you please do a video on the nitrogen cycle, as I find that topic really confusing..
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Request the topic :)
hi... According to many books...the idea about nephrons and other ions and water is not included in CIE biology syllabus.. kindly guide me if i am wrong.... THANK YOU
Wait quick question.... do I need to revise this for gcse in 2022 this year for paper 1?
check your specification.
thanks
4:17 so noones gonna talk about how he left his car outside
hey what exam board do you specify
Hi Sabrina! These kidney videos will tell you all you need to know for AQA, OCR, Edexcel, and IGCSE :)
Thank youu this is so helpful !
You’re super welcome! Thanks for leaving us a comment (it really helps the videos to get seen)! Good luck with all your work 🙌
Guangdong Country Garden school in China IG1-1 loves this video.
Wow, first time seeing 999 likes
❤
Did u taste your sweat??lol
Do you have common sense?
ily
Thanksssssssssssssss!
Is this on paper 1? thanks
why do kidneys are have 2 when is not be always donate without book ? Igcse not must for is? BEcause but thank you because now i has understand the thibg abd yes i has sub to you
i also hav pased exam!! I GOT F FOR FANTSASTIC!!
Who's gna tell bud
algorithm
2024 ?
Am cooked
ks um bio
Um exusme cant i talk ? im from indonesia my name is risyad eka wijaya i cant talk inglish so many . i love u.s.a❤
Go get a life bro
what's ur problem bro, he's giving us free lessons and all u have to do is sit here and hate??? like I think you should get a life and stop wasting it spreading hate about poor cognito
1. He cant teach to save his life
2. He teaches from the wrong spec
3. He is draining our economies resources doing this
4. He would be more useful in some other era of employment, eg picking cotton
5. Thx for subscribing!!
6. He doesn't know how to pin his own comments @@Ruby-ed9ti