Surface Tension in Lung Alveoli

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Video Summary:
Surface tension is special force between water molecules on the surface. Oxygen and hydrogen atoms in water molecule are partially charged. Positive charge on the hydrogen atom of one water molecule attracts the oxygen atom with negative charge of the other water molecule. Water molecules deep in the water phase experience such attraction in all the directions so there is no net force acting on deep water molecules. However the water molecules on the surface have no other water molecule to pull them outside the water phase. So such water molecules experience net force towards the bulk water phase. As some water molecules are pulled deep in, the remaining water molecules on the surface develop tension. This is surface tension. In lung, alveoli are lined by fluid. And the remaining space in alveoli is filled with air. So there is air-fluid interface in alveoli. This interface tries to decrease it's surface area. And in doing so, they collapse alveoli. So extra pressure is required to expand the alveoli with high surface tension.
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DISCLAIMER: This video is for education purpose only. Although every effort is made to ensure accuracy of material, viewer should refer to the appropriate regulatory body/authorised websites, guidelines and other suitable sources of information as deemed relevant and applicable. In view of possibility of human error or changes in medical science, any person or organization involved in preparation of this work accepts no responsibility for any errors or omissions or results obtained from use of information in this video.

[@josetrujillo738]

This was the nicest explanation: it made it so much easier to get an idea for why surface tension matters in alveoli.

[@NonstopNeuron]

thank you so much

[@BeatlesSheeran]

Wow. Watched a lot of Videos about the topic and yours finally explained the concept to me so easily. Thank you so much great teaching!!

[@hfof]

Last year, I was struggling with this topic so much, so I unfortunately memorized it. By then, I watched tons of videos about this topic to no avail. Until I found your video, my brain has grown into knowledge, and my humble brain feels so grateful for your help.

[@Bee-rw4vh]

This is such a great video!! I love your short videos. Short but full of only necessary information!

[@NonstopNeuron]

So glad! Keep watching!

[@muaazalizahid3961]

Thank you so much for giving that concept.

[@andreifurtuna4359]

Bro that video could not have been explained better, well done

[@atishajaykumar7178]

Such a useful video and so concise. Thank you 👍

[@brentonedwards]

This is the best video describing surface tension.

[@jhan168]

That was so easy to understand. Thank you!

[@dhandapani9870]

Thank you so much sir. You’re such a blessing

[@ali_baroudi]

Thank you so much for this explanation 🤍🤍🤍🤍🤍🤍🤍

[@kawtharal-nasser7706]

Perfect explanation. Keep going!

[@Ragnarson998]

this is the best explanation of surface tension i've ever heard thank u

[@78pallavir39]

Short and sweet 🔥🔥

[@OElizabeth01]

Thank you

[@sung-wookher4381]

THANK YOU SO MUCH!

[@virtualmanny]

one of the best videos on the subject

[@leaalexandra8530]

Thank you so much !!!

[@kelitahernandez1135]

thank you!!!!

[@marishtadon2538]

Beneficial Video! Makes life much easier

[@Ba-th3pp]

Very helpful, Thank you

[@meazageb83]

seriously very easy and spun feeding thx

[@tanvirtaswar6402]

You just blew my mind there with the surface tension how it actually occurs

[@gracysingh1737]

Thank you sir Amazing explanation!!!

[@jyg9268]

Amazing Excellent explanation Thank you somuch

[@asirishanaka2843]

Amazing

[@victoriapollastri2156]

The most clear and well explained video. THANK YOU

[@NonstopNeuron]

Welcome 😊

[@ananyae.1597]

you are so amazing. thank you so much- i was struggling with this concept, and you helped me!

[@NonstopNeuron]

Glad it helped!

[@s9plus603]

So helpful sir 💐💐💐

[@ericarosales7727]

this was excellent, thank you!

[@NonstopNeuron]

Glad you enjoyed it!

[@Severus-S]

Thanks for such helpful video! Now it’s more easier for me to memorise ❤️

[@NonstopNeuron]

Great

[@Afshu97]

thank you love u

[@mohammadassaf2715]

the best video explaining surface tension

[@NonstopNeuron]

thank you..!

[@SarahsChorus]

Thank you!

[@NonstopNeuron]

You're welcome!

[@sarag.regassa7947]

This is great! Thank youu!!

[@NonstopNeuron]

Thank you 😊

[@mmondira]

sososos helpful! no other lecturer nor video on youtube could explain this to me

[@NonstopNeuron]

Glad to be helpful. Please share so that others can also benefit and it helps us also. Thank you so much.

[@sabyasachibhattacharya2456]

What a explanation in 3-4 minutes,Sir u are amazing .

[@NonstopNeuron]

Thank you

[@warishawaseem8411]

the best video so far... made my concepts clear all at once😊

[@NonstopNeuron]

Glad it helped!

[@khushisanghvi781]

LIke WOWWWWWW......... Crytstal clear...... THANK YOU SOOO MUCHHH

[@akashsamanta4180]

i really love it what a explaination sir thank u

[@NonstopNeuron]

You are most welcome

[@enispogsr9544]

Whoa that was so heplful , thanks a lot sir

[@NonstopNeuron]

Most welcome!

[@jana-kx3hf]

Best

[@saz4217]

I don't know how to thank you, you helped me alot.

[@NonstopNeuron]

Glad I could help!

[@user-maath]

Legendery ♥️

[@NonstopNeuron]

Thank you 😊

[@RK-ep8qy]

that was a good video, lost you in the second half but still good

[@NonstopNeuron]

Glad you enjoyed

[@paolam.3571]

Nice video! What references did u use???

[@NonstopNeuron]

Boron, Berne, Guyton physiology

[@sujaysaha9691]

What is the force called while attraction between del(+) hydrogen and del(-)oxygen in water ??

[@NonstopNeuron]

hydrogen bond

[@warishawaseem8411]

is pulmonary membrane and respiratory membrane same?

[@NonstopNeuron]

Yes

[@Real_Alien]

is the presence of the fluid in the first place normal? like why is there water anyways?

[@NonstopNeuron]

Hello Real Alien, Its an honor to talk to you. Here on planet earth, medium of life is water. Cells literally live in water. You will see water everywhere in the body. Scenario on respiratory epithelium is no different. You see similar fluid elsewhere too. Like mucus layer in the digestive tract, vagina, fluid on eye etc. Only excuse you can give is outer layer of skin, which is dying always anyway. I hope you find the life on earth interesting. 😂😝

[@Real_Alien]

@@NonstopNeuron Thanks, earth habitant. but does it have a little function at least?

[@NonstopNeuron]

Without water the epithalial cells will dry out, and die.

[@vishnumaya4169]

3.34 can you pls explain me... 🙏

[@NonstopNeuron]

you can think like the surface of water is a tense fabric. and this fabric is attached to the alveolar wall. The tense fabric will try to shrink. As it shrinks, the wall to which it is attached also shrinks. so everything collapse. Clear?

[@vishnumaya4169]

@@NonstopNeuron ohhh,,, thank you so much, I got it... 🙏❤️

[@Memsy7]

@@NonstopNeuron thank you. I was having the same confusion.

[@gagger0739]

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[@kendall2004]

Thank you sir,I'm glad I found your chanel 🤍

[@NonstopNeuron]

It's my pleasure too

[@aliali-de3ws]

Thank you so much!!!