Oxygen movement from alveoli to capillaries | NCLEX-RN | Khan Academy

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Watch as a molecule of oxygen makes its way from the alveoli (gas layer) through various liquid layers in order to end up in the blood. Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai.
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1 окт 2024

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Комментарии : 116

@tandome 8 лет назад

I just have to say, your brilliance astounds me and words cant even express how much you make sense of everything, the magnitude that Im expected to understand as a 1st year nursing student. You simpify in such a way, that is unequivocal, it must be a gift. Your voice helps, its very listenable, especially your accent. Thank you, a million times over, thank you.

@whiteboardanimatorhamna 7 лет назад

amy gdala I've been trying to find words to express my gratitude towards Khan Academy but couldn't. Now you've helped me with, if not accurate, the most close words to thank Khan Academy for these amazing lectures!

@shinchang61 7 лет назад

its her amygdala

@МаринаБезрукова-о1ъ 7 лет назад

ko TУТ МOЖНO НАKРУTИТЬ ЛАЙКИ, ПOДПИСЧИKOB PАСКРУTКА ГРУПП. ПEРEXOДИTE В ПРOФИЛЬ, TАМ CСЫЛKA НA САЙТ

@guesswhoami4723 6 лет назад

amy gdala Try Crash course

@sarabain3023 6 лет назад

Give one location in the human body where partial pressures lower than the unloading tension may be reached. Give a reason for your answer. Please help

@obiwankenobi1409 4 года назад

11 year old me who has to learn this kind of stuff These are confusing times

@Coreycry 10 лет назад

As a non-native english speaker, I very much appreciated your clear spelling and the recording quality, along with the god-sent subtitles! *slow clap*

@atijjain2197 4 года назад

Most of you are nursing students And I'm supposed to learn this for grade 10

@MedFunds 7 лет назад

Great vid - but I'm pretty sure there is no thick layer of connective tissue for an O2 molecule to travel through. In fact, the membrane of the Alveoli and the Capillary are fused so as to create as little barrier as possible. Otherwise, a gas such as O2 would not be able to diffuse down concentration gradients. Correct me if I'm wrong.

@NamNguyen-he7gz 4 года назад

What name of this draw app ?

@kavyakothalanka5242 4 года назад

i never laughed while reading this topic. the music just boosted my energy!!! hahahaaaaaa!!!!!

@EminentlyEms 11 лет назад

Fantastic video as always. The speeding up with that choice of music made me smile. Cute.

@amaankham3137 7 лет назад

Emilie Ludén yeah true . sorry for replying after 4 years 😂☺

@christinamclean93 10 лет назад

I LOVE KHAN ACADEMY!! _TRUE FAN!!

@msgenevieveblais 8 лет назад

lol the music

@meroOoO92 7 лет назад

i was shocked hahahahah

@nourmahjoubi9771 7 лет назад

that made me LOL too !!

@shaewnbrown1371 3 года назад

Thanks to you I'm doing good in school in scenes

@artofwar420 9 лет назад

I like the hair haha.

@Paragota 11 лет назад

Loved it, but there is a small detail that it is not correct. The respiratory membrane OR Blood Air Barrier is actually composed of: alveolar cell, fused BASAL LAMINA (not Basement Membrane) of alveolar cells and endothelial cells, endothelial cells (of capillaries).

@DrugoliKnight 9 лет назад

Paragota I was also a bit confused about this. Looking at my histology textbook shows that there really isn't any connective tissue between the alveoli and the capillaris. Instead, what is going is that epithelial cells of the alveoli make an extremely thing sheet around the inside of the alveoli, where right beneath them there's a merged basal membrane/lamina from these epithelial cells and the endothelial cells of the capillaries. This means that the distance the oxygen and carbondioxide has to move is a lot smaller then what is indicated in this video.

@sarabain3023 6 лет назад

Give one location in the human body where partial pressures lower than the unloading tension may be reached. Give a reason for your answer. Please help

@Rene-uz3eb 2 года назад

Given that co2 pressure in blood is in the same ballpark range as oxygen, I wonder why it is that athmospheric CO2 has any effect on us at all: it's only 0.04% of air. At levels that make you sick, say 0.2% or 2000ppm, the atmospheric CO2 would still barely effect the reverse CO2 gradient from blood to air. Ah right, it's because CO2 dissolves much more readily in water, water is a CO2 sink. Someone should put up the corresponding effective CO2 gradient. It would also seem then that alveoli surfectant condition has a bigger impact on CO2 gradient than on oxygen. In other words, CO2 will be leaving much more readily at low surface tension, and will be trapped at high surface tension. Finally, since body only has CO2 sensors, not O2, breathlessness would seem to be from insufficient CO2 clearance predominantly (the blood has a pretty large store of O2, so insufficient breathing would first show up as too much CO2 content). Speculating here.

@campanelli8 7 лет назад

exchange of oxygen and carbon dioxide at the pulmonary capillary bed . Then from that to venules vein's and at last superior and inferior vena cava to right atrium I think that's a little more simpler. Just spit balling here.

@RICKENBOCKEN 7 лет назад

vena cava is in the systemic system. I believe your referring to the pulmonary circulation system. which is right ventricle to pulmonary arteries, then pulmonary capillary bed, too the pulmonary veins back to the left atruim

@tsheringlhamo6233 7 лет назад

It's cuboid, the rectangular 3D thing

@diannosaur16 5 лет назад

How about if the person is doing exercise? Could that not be a reason for P1 and P2 to change?

@HabibiGa1z 3 года назад

do oxygen molecules get dissolved in the fluid when travelling from the alveolis to the bloodstream?

@TheManOfRash 11 лет назад

i feel like im commenting this on every KAM video, but le medicine ones are by rishi, not sal

@anneuppal4078 7 лет назад

Thank you so much for this...all the respiratory videos are broken down so nicely....I have forwarded it to all my A&P nursing students. Thank you!

@karamiller4310 Год назад

This is the video I was scouring the internet for. My professor nor no RU-vid video I’ve seen seems to address how pO2 in the lungs is actually computed, they just say it! Thank you thank you thank you

@Zajme 6 лет назад

Thank you so much Khan academy and mr. desai

@wanfaris9473 4 года назад

Hello, what makes the O2 gas state to liquid? or CO2 in liquid state to gas?

@rabiahasnain7394 4 года назад

wan faris my man we the only two in 2020😂

@drtiwari6156 5 лет назад

nice explanation

@luciefarar1807 6 лет назад

The thing you drew is rectangular prism

@arborshell6830 10 лет назад

Sal, if helping others equates to happiness, then you must be one of the most blissful people on earth.

@ChaewonieYT 10 месяцев назад

nicely explained and its very useful. but that RBC has to be the biggest in the world

@viviannguyen3262 8 лет назад

i hope i can understand all what you explain, it's related to my subjects much. Now i need to improve my english more. :(

@aadivkole737 4 года назад

Could you please specify which connective tissue acts as a medium for the transfer, love the vid but couldn't help but ask 😄😄

@iblaze1085 4 года назад

You could call it surfactant

@SimranKaur-hw4hx 3 года назад

AMAZING THANK U

@shreyas7439 7 лет назад

the way you use the music was lit tho!

@PeterPete 3 года назад

thought you were actually going to demonstrate an oxygen molecule making its way from the alveoli to end up in the blood!!! You never stated in the description you were going to animate it.

@hyunjunlee2987 7 лет назад

great video! helped me alotttt

@carlakantyka2783 10 лет назад

I really can't get over how well this video basically explains lung disease.

@xinking2644 3 года назад

just awesome, thank u bro ❤

@oliversparks1459 4 года назад

Exceedingly Impressive Informative and Presented

@lindseycoleman6800 9 месяцев назад

How can I find an easier way to get oxygen through the membrane if mine has become harder

@vinnivinodh3827 9 лет назад

which software is used for drawing?

@AhmedEkri 8 лет назад

MS paint.

@bowgurdoc 7 лет назад

Kharra Alyk

@ravenex5515 4 года назад

This is far easier than other tutorials.

@guptabp5055 5 лет назад

👍👍👍

@SacredSalmonFish 2 года назад

ok, I needed all this until 5:50 for my year 7 assignment...

@Melzare 6 лет назад

Jesus that went right over my head

@shivonnecunningham8703 4 года назад

i dont understand i am unsubscribing if you need to make it exciting

@muhammadabubakar9712 7 лет назад

superb

@xirishluck7 11 лет назад

I can't thank you enough for these videos. I wish my teachers would use them! Great resource.

@MariaTResele 9 лет назад

Interesting topic and good explanation.

@GurleenKaur-e7h Месяц назад

Absolutely amazing. Well explained mr.

@Dwijesh91 11 лет назад

The 3D Rectangle is a great example!

@hamadalmhanedi6921 11 лет назад

WHY DID UR VOICE CHANGE !!! :(((((

@akaursunda3082 6 лет назад

omg thank you so much, this was sooooooooooo helpful!!!

@alexanderkenniethbam 5 лет назад

Thank you!

@xaustinx15 10 лет назад

So is this true for other types of gases/vapors like vaporized or insufflated drugs?

@danieljluland9862 2 года назад

kind of a round about way of getting to the point.

@ibnaliraq1000 11 лет назад

Very nice video thank you

@Seekertopath 11 лет назад

such a awesome video

@jga4750 7 лет назад

you are amazing thank u!

@zungazen 8 лет назад

thank you

@SwamiSoze 11 лет назад

wow great vids thank you!

@shafeekkhan7586 7 лет назад

Love the music

@nabdh100 9 лет назад

thank you so much!!!!!

@sahil-um8bf 4 года назад

Are u american or chinease

@lizatsoi2322 10 лет назад

Now im confused... So oxygen from lungs goes directly to the capillaries then to the blood then to the rest of the body? Thought that oxygen travels from the left lung-left pulmonary artery-heart-aorta-arteries-capillaries-rest of the body?

@lizatsoi2322 10 лет назад

Left pulmonary vein**

@sarahsimmons3577 8 лет назад

+Liza Tsoi it is implied

@aboalreem80 3 года назад

Very beautiful man

@lucyl1921 10 лет назад

Don't really get it, does that mean all that tissue is liquid? But great explanation anyway.

@nickcolejackson6884 9 лет назад

Lucy L No the oxygen is moved through the tissues in the liquid phase.

@vinnivinodh3827 9 лет назад

+Nickcole Jackson it is about respiration in alveoli

@nickcolejackson6884 9 лет назад

VINODH SEEMAKURTI what does that mean. I am not in that class anymore. I made my A, now make yours. Thank you for late information.

@eragon2121 8 лет назад

+Nickcole Jackson Oxygen turns liquid at extremely low temperaures/extremely high pressures though. The tissue isn't really entirely liquid but considering that most if its mass is accounted for by the water in the cytosol, it's mostly made up of liquid.

@noahhill7842 8 лет назад

terrible video cmon guys you can do better

@AshiPongener 11 лет назад

You saved my day!!!

@dflesh12 4 года назад

Look at the hair

@mcsmartass8306 4 года назад

its called a rectangular prism

@akshayb5265 11 лет назад

LEGEND!!!

@mdtohidulislam8431 3 года назад

Thanks

@elaynahallal3827 5 лет назад

its a rectangular prism...

@Sum_1human 2 года назад

@aparnasingh8644 5 лет назад

Do the lungs receive oxygenated blood

@cassandrarinehart9970 4 года назад

Aparna Singh no they receive deoxygenated blood and then carries oxygenated blood to the rest of the body

@ahsanulfikri9580 5 лет назад

what cause the diffusion??

@noahhill7842 8 лет назад

bbbbooooooobbbbbiiiiiieeeeeeesssssss

@sendygreenhoney9452 10 лет назад

thank you so much, i'm sure i'll have test on this tomorrow

@abirhasan507 Год назад

You guys are awesome!

@katean2459 6 лет назад

thank you for enlightening me

@عبقالزهور-ب8غ 3 года назад

You're the best

@churnel1 6 лет назад

so is this diffusion?

@lulusaa7499 9 лет назад

Thanks for teaching!!

@shanmu1891 6 лет назад

Gud xplntn

@lukasx543 7 лет назад

Not good .

@lukasx543 7 лет назад

U just forgot to say the most Important , Gas molecules move from higher concentrations to lower concentrations ( diffusion) witch is a passive process and doesn´t requiere energy . Partial pressure of o2 in alveoli 100mmhg and in Arteries : 40 mmHg

@sarabain3023 6 лет назад

Give one location in the human body where partial pressures lower than the unloading tension may be reached. Give a reason for your answer. Please help