Alveoli: Gas Exchange

[@sussybaka7532]

This 3 minute clip is more useful than my biology teacher, cheers

[@triptizzz6411]

Same here

[@ratatouisvuitton864]

My biology teacher could whoop this 3-minute video's ass. so can't relate B)).

[@johnny3402]

Wow owen so goood

[@joshrajasekaran1746]

Shut up you nerd

[@joshrajasekaran1746]

Go and get a girlfriend

[@freddieedwards1938]

I'm leaving this comment when I should be revising because this was so helpful and didn't waste any time. Thank you!

[@miniman05]

Yes's

[@lrzn_cutecore]

Alveoli :D

[@melissarainchild]

A relaxed voice that comes to the point. Perfect rate of distribution, perfect spacing. Thanks, you helped...and gained one subscriber :)

[@Science_Sauce]

I’m glad you liked it so much!

[@inara89iz]

I love it rily 💓💓💓💖💗💗💖💓💓💖❤️

[@aishaarmy461]

I don't understand my science teachers but this is the best teaching they know how to teach

[@sabertoothtooth2572]

Great explanation! Alot better than some of the videos that look like they've been made in the great depression

[@inara89iz]

Right

[@ramalakshmi7369]

Wt do u mean? 😅

[@roshandontknow]

Cmon that didn’t look like cauliflower 😂😂

[@_itzmidzy_]

It was a grape 😂

[@Ikilledmanual]

Nahh 💀

[@ChingMing-u6h]

Balls

[@stipimts7266]

no this lik a penis

[@king112ize]

thank you i got 98% in the exam :D

[@Science_Sauce]

+Fadi congrats!

[@razank9131]

Fadi omg howwww

[@omart2500]

what did you get wrong?

[@acestar4829]

Ughhhh! I got 97% u beat me my one 😂 I only lost 2 marks too!!!

[@princeshukla2497]

lier

[@CODEXEXISTS]

So glad my teacher left this in the google classroom to use as a revision! thx mate :)

[@Science_Sauce]

You’re welcome

[@CODEXEXISTS]

@@Science_Sauce after 7 years he still responds to the comments...You earned a sub!

[@yoboyking_07]

This is the best science teaching ever i got 100% in my exam

[@QUBIQUBED]

NOOOOOO WAYYYYY

[@Weirdfuckingchinchilla]

Cap

[@SleepDeprivedGaming]

Thought this video was going to be lame and boring, turned out to be more useful and explanatory than my science teacher. Thanks dude.

[@vihaangamerz5761]

My school has taken this video for explaining 😂

[@Player42069]

Same here😂

[@mohamedalshamsi880]

One of the best explanations ever

[@tanishamalhi]

omg this video is actually more helpful than any of my science teachers notes, i had a mental breakdown cause i didn't understand the topic and in just 3 minutes i understood it but u may want to slow it down because it does go a bit fast

[@tanjadevos7255]

I love your explanations. Would it be possible to to one on the villus?

[@solosol5430]

You have gained me like an hour of studying with this 3 minute video

[@Science_Sauce]

Happy to help!

[@ayushmukherjee5243]

This is what I was constantly finding..........this unique way of teaching awesome

[@timothyc2346]

Thank you! I spent 40 minutes trying to understand this topic, only to find that a three minute video did the job in THREE minutes, as promised :))

[@PhysicsHigh]

excellent video, concise and to the point

[@tryhardjustin5628]

I a science teacher really like the vocabulary used in the video

[@ADNAN-sd4pr]

I have a science test in 2 days and this video helped me a lot!!! Thank you so much!!!

[@zhongliswallet1429]

no this 5 minute clip is better than my science teacher

[@eshalhasan3415]

This 3 mins video taught me smth my teacher couldn't teach me in 40 mins. TYSM! So useful for biology students

[@np4511]

Hi! what happens if there is a high CO2 concentration in the atmosphere - how will this affect heart rate?

[@Science_Sauce]

SHORT ANSWER: heart rate will increase. LONGER ANSWER: increased carbon dioxide in the air means more carbon dioxide will diffuse into the blood, raising the blood CO2 level. CO2, when dissolved in blood, makes blood more acidic. The brain recognises this drop in blood pH, and sends a signal to the heart to beat faster to try to remove it.

[@np4511]

But I'm slightly confused. If oxygen diffuses into the capillary from the alveoli how does CO2 diffuse into the capillary as well?

[@Science_Sauce]

The diffusion of one gas doesn't prevent the diffusion of another. Under normal circumstances, the blood CO2 level is higher that that in the alveoli, so CO2 would diffuse out of the blood. However, in the example you described where atmospheric CO2 level rises, the concentration in the alveoli would also increase. This would either slow the diffusion of CO2 out of the blood, or result in a change in direction of CO2 movement (if the atmospheric CO2 level became high enough).

[@np4511]

Thank you so much, your explanation was perfect!

[@Kawther_sanrio]

Bro in 3 minutes its like i studied a whole 3 hours THANKS!

[@eifclub978]

thanks, after 7 years this clip helped me understand everything. Helped me got a 100% in science. You gained 1 sub

[@aisheeaindreebanerjee7195]

Great explanation. To be honest I already understood all this sort of okay‐ish, and this was sent by my school as online study material, but this is really good. Extra good because of the exam help part (which I wrote down somewhere) I know the word is getting a bit repetitive, but good animation/diagrams and an equally good and short explanation.

[@irfanali9051]

Thankyou sir I got 1st position in test 🙂

[@Science_Sauce]

Well done!!

[@arxan4467]

Thank you, this has helped me in my respiratory system assignment.

[@tiyapatel7731]

ill be using this explanation for my exam!! i may come back and tell you what i got!!

[@kiranks8789]

This was more useful than what my science teacher said thankssss 🙏🙏

[@ahmedhaseeb7228]

Very well explained video good work chief

[@butter7170]

hey! can you make a video of double circulation? thanks !

[@lachiehowes-yarlett5444]

I like your voice. Thanks for the videos

[@patsang4507]

Excellent as is the inhalation exhalation video. As a distance learning teacher, thank you!

[@ayeshanaseer3210]

name two structure across which oxygen moves from an alveolar cavity into blood capillaries?

[@samuelhunt7923]

using this in my power point, thanks so much. (I will Give Credit)

[@suzannahporter1254]

This is soooo helpful and short so you don't get bored :D Thank's so much!

[@Fatimaaxoxo]

Thank you this gonna save me before the midtermsss

[@comprobardisponibilidad5281]

Still I am confused of the diagram wheather the capillaries present outside the alveoli or inside . Please help me or just explain in simple terms how actually gas exchanged in capillaries

[@esnapeye7098]

I didn't understand the messy thing about capillaries of pulmonary artery and pulmonary vein with the air sac????

[@omvirajsoodan9291]

What is important in exchange of gases?

[@unseenempire2099]

Thanks for that extra info on important features of gas exchage surface

[@theamazingguy150]

Thank you, especially because you explained how the concentration gradient is mantained

[@d.anielb4661]

We could make an external lung machine for use in emergencies of people suffocating which takes out a patient's blood, oxygenates it and then reintroduces it to the bloodstream so it keeps the patient in stable condition while the airway blockage is extracted? I don't know, it just came to me.

[@aliateeb123]

its called a ventilator

[@eagleffgaming7889]

Thank you so much sir . You saved me

[@vincenttelfer4206]

at 2.25 into video, the blood capillary and the lymph capillary run in parallel separated by interstitial fluid

[@ProfessorElectronic]

May I ask why Nitrogen did not defuse into the blood steam if gas exchange is cause by diffusion?

[@Science_Sauce]

Nitrogen can diffuse into the blood just like oxygen. However, the body doesn’t use or produce nitrogen so it’s concentration in the blood is about the same as it is in the alveoli, so there’s no net movement into or out of the blood. Diffusion requires a concentration gradient.

[@ProfessorElectronic]

@@Science_Sauce I see. It is similar to the other gasses right? We have the same concentration in our blood as to the outside air but it is not toxic to the body because it did not react chemically with cells and molecules found in the blood stream.

[@Science_Sauce]

Correct

[@bikramaditya1855]

but from where do those carbon dioxide particles come to the capillary network? is it from the heart?

[@Science_Sauce]

Carbon dioxide is produced during respiration by all body cells. There are capillaries in all body tissues and the carbon dioxide diffuses from the cells into the blood capillaries. This blood capillaries connect to veins which connect to the heart. From the heart the blood (carrying carbon dioxide) goes via the pulmonary artery to the lungs.

[@Momoboy123]

Thank u I got 15% at exam😊

[@CallmeTaj.]

Congrats bro

[@riyajaiswal4185]

Pls put some more videos such blood supply to the lungs

[@devimaddu1956]

This is really helpful. Thank you🙂🙂

[@kidsworld9782]

I have a question, Describe how carbon dioxide is removed from the blood to the air space in an alveolus?

[@Science_Sauce]

Same as oxygen - it diffuses across.

[@ebrimabah3837]

Thanks what you deliver here is the same as our biology teacher gave us

[@ccarrie87]

Did not expect a geordie accent 😂😂 pleasant surprise and great vid 👍🏼

[@Agustd.elight]

Very nice explanation thankyou science sauce I have got 97%in the exam

[@Science_Sauce]

Congrats - well done!

[@Agustd.elight]

Thanks

[@hasmiati1]

Anyone can help how many times of gas movement through membrane cell from one point to another point in the gas exchange

[@jhyland87]

Nice. Ive always wondered exactly how this works

[@---nk3kc]

Say thanks to God

[@eloise-mariebamford1737]

You sound like Cheryl Cole and Liam Payne mixed together

[@DP-jl6xz]

IT'S MEL B!!!

[@n.a7848]

Eloise-Marie Bamford He sounds a like Niall mixed with either Zayn or Liam

[@walikazmi7613]

thats awsome

[@lucybrennen3695]

He only sounds like both because hes a man (the liam part) and a geordie (the cheryl part)

[@tillyramshaw3490]

@@n.a7848 ....niall's irish..

[@asaadshah5658]

I know it's been 2 years since this video was uploaded but I have a question and a really really stupid one the capillaries surrounding the alveoli they are deoxygenated or not?

[@Science_Sauce]

They are deoxygenated as they reach the alveoli and become oxygenated at the alveoli.

[@asaadshah5658]

@@Science_Sauce thank you ❤️

[@shaniceshirley9009]

Thank you so much for this video it was very helpful.😁👍

[@brittneyrichards4215]

you sound like willne and true geordie tbh and thanks for the help. this was way better than listening to my teacher for 2 hours explaining it over and over. im a visual learner so these pictures really help me and when i watch videos i understand more. thank you once again

[@Science_Sauce]

You’re welcome.

[@Ghost.Spectrum]

Thanks so much man! I was always scratching my head when I saw words like "diffusion". I knew the basics of gas exchange but wanted to know more. Awesome explanation and very clear for a first semester human anatomy student! I'll try to remember this video in case my anatomy/physiology professor wants to give a more visual representation of gas exchange

[@munazzafareed8831]

It REALLY helped. Thank you!

[@marialivingston8154]

This was so useful thank you so much!! Ahh I'm going to pass my test now!!

[@lqvexiao]

well did you pass

[@marialivingston8154]

Yes!

[@Alexandra-sd4yy]

I have a question at number 5- good ventilation: it is said that the alveolar air is partially replaced with the atmospheric air. How can it be possible? I know about the ventilation of the dead space but i didn't figure out the mechanism of partial atmospheric air replacement yet.

[@Science_Sauce]

I don’t quite understand your question. When you breathe out you decrease the volume in the lungs (and alveoli) and force air out, which is replaced with atmospheric air when you breath in: as you breath in the intercostals move the rib cage up, increasing the volume, and therefore forcing “new” air into the alveoli. Does that help?

[@Alexandra-sd4yy]

Science Sauce the alveolar air is partially replaced with atmospheric air - i don't understand this sentence 🙁

[@Science_Sauce]

When you breathe out, your alveoli don’t completely empty, a portion of the air will remain, so it’s not 100% replaced, only partially replaced

[@Alexandra-sd4yy]

Science Sauce ok 😂 that's pretty logic. I thought it implies the air in the trachea or the rezidual air but it's that simple. Thanks !

[@075MuhammadAhmad]

I got 99% marks in exams inshallah

[@quinn7613]

So when the carbon dioxide leave the blood cells and move to the alveoli is the concentration of the carbon go low to high or high to low?

[@Science_Sauce]

High concentration in the blood to low concentration in the alveoli. Respiration has produced carbon dioxide in body tissues which is transported back to the lungs. It is already present in the air (and in the alveoli) but the concentration higher in the blood than the air.

[@wafIeee]

how does the large surface area of the alveoli make gas exchange better??

[@Science_Sauce]

Greater surface area = faster rate of diffusion. (There is more area for gases to exchange, so more gas can be exchanged)

[@wafIeee]

@@Science_Sauce yeah because its compact and folded which allows it to be smaller with the same effectiveness as not being folded

[@wafIeee]

tnx for responding even tho this vid is from so long ago

[@happiness2222]

I understand clearly after watching this video this is video so useful thank you so much ❤️

[@ayushgamer7752]

Tomorrow is my E.V.S test in evs my teacher studied at respiratory system and tomorrow is my test thankyou for this

[@Science_Sauce]

Good luck with your test.

[@TheDazzler420]

Helpful knowledge for understanding caronavirus

[@antoniab.1712]

quarantine gang! My teacher sent us this link lol

[@fionnmorgan3381]

Yup

[@eviekidd6480]

Going to subscribe to you because it when I looked at your channel, it seems you have videos for every topic we (probably) will do in school! Thanks a lot 😊

[@sunflowers7093]

How does the damaged structures of asthma impact the function of the system (respiratory) during gas exchange?

[@Science_Sauce]

It limits ventilation. Airways become inflamed and therefore narrower.

[@sunflowers7093]

Thank you! & also why is the surface area in alveoli important?

[@Science_Sauce]

Gases diffuse at the alveoli surface. If they have a larger surface area, that means more area for diffusion of gases, and that means more efficient transfer (i.e. more oxygen and carbon dioxide can be transferred in any unit of time.)

[@musicotti617]

Thanx a lot your video is really helpful 🏆

[@TebenguniLilDove-w1r]

Thanks for relighting my mind💛✌

[@vegitogamerz2283]

This video is very useful helps me a lot thank you sir

[@Flyingfrenchie]

These videos saved my GCSES thank you so much

[@Science_Sauce]

You’re welcome. Good luck for results day.

[@Lol-st7sk]

Can someone explain the term dissolve in this context?

[@slayergaming7253]

/IF THE SURFACE AREA IS LARGE TAHN HOW DOES IT TAKES LESS OXYGEN

[@arpanfactstudio9941]

Sir which APPLICATION YOU USE FOR THIS VIDEO. PLEASE REPLY

[@Science_Sauce]

The drawings were done on an iPad and the presentation was out together on Keynote.

[@arpanfactstudio9941]

@@Science_Sauce thank you 😊🙏🏼love from INDIA 🇮🇳

[@Milandvu]

thank you soooo much now I can finish my assignment

[@AmazonRama]

Thank u it was crystall clear

[@lennonmclean]

Our teacher played this for us and everyone thought the alveoli looked like ballsacks

[@BVB09_rose]

Thank you very much Today, I did a checkpoint exam and it literally asked the question that you did in the vid Tysm 😀

[@Science_Sauce]

You’re welcome!! I hope the test went well.

[@BVB09_rose]

@@Science_Sauce The test went well but since it's a checkpoint exam there should always be that hard question(s) I hope I get a 6!!!

[@cupcake8688]

Thanks Alot for the help ✨

[@Me2-l4m]

How repair and will hydrogen declare co2

[@etharahmed4748]

if the tv=500cm3 and irv=3300cm3 th erv=1000cm3 and the rv=1200cm3 the amount of air that participate in the prosess of gas exchange between the alveoli and capillaries is equal to4.800L in males why it false???

[@lion3lb_]

wait people do the same exact things in high school? lol I'm in 6th grade

[@natalienatalia4883]

same

[@xivk1]

Yeah, I'm from Malaysia and I'm learning this rn.. its hard and not that hard at the same time, but it's fun studying it

[@lmsbutcher6645]

@@itz_crystal755 what why are you doing this in french

[@mustafa-pv9tl]

What's Ur age

[@lion3lb_]

@@mustafa-pv9tl 12 but at the time i was 11 i think

[@KARNATAKA-NURSING-ACADEMY]

Sir explain the exchange of gases blw alveoli and blood ...how to write the ans ..plzz tell me sir

[@KARNATAKA-NURSING-ACADEMY]

Plzz explain

[@Science_Sauce]

What’s the exact wording of the question you need to answer?

[@yousufhasan1720]

I love your Irish accent and the shape of the alveoli!

[@Science_Sauce]

+Yousuf Thegamer thanks, but I’m English, not Irish.

[@bobthecookiemonstah2564]

+Science Sauce are You from Newcastle

[@Science_Sauce]

Yes

[@isee7283]

an amazing video - 10/10

[@mohdumar5688]

Thank you this video is very useful for me

[@8372cd30]

thank you so much! this helped a ton

[@SayedHassan-nt7xr]

gorgeous

[@baryantambirajackline7838]

Thank you so much I have enjoyed it

[@Anonymous-ik3sz]

that diagram is very useful thanks

[@addisonandidk83]

who else is watching this during covid for school??!

[@rice6417]

yh

[@lachiehowes-yarlett5444]

yep

[@camera_man6969]

Best sauce in the world!!!!

[@Lifetapestry2011]

Great explanation