Respiratory | Mechanics of Breathing: Pressure Changes | Part 1
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- Опубліковано 29 вер 2024
- Official Ninja Nerd Website: ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will begin on our three part series outlining the mechanics of breathing. During this video, we discuss the pressure changes that occur during the mechanics of breathing. We hope you enjoy this lecture and be sure to support us below!
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I just finished reading Berne's and Levy's book on Respiratory the second time this week, and your videos on the same topic is much better explained without all the crazy formulas and physics. And the best of all is that the contents in the book make more sense after watching your videos. Really appreciate your great works. Respect.
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@@NinjaNerdOfficial it did so to me! thank you a world!
I’ve been reading Guyton and it’s so damn confusing
Same. My school usually use Guyton but for this they reccomended Berne & Level cuz Guyton would bee " too basic"
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I finally get the negative pressure thing.
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THANK YOU
Great explanation. 👍🏻❤️
if TP is +4 and TTP is negative
doesnt that mean the lungs want to expand while the thoracic wall wants to cave in?
I have the exact question :(
From what I read, since TTP is negative, air outside would want to go inside the lungs because air flows from high to low pressure. So I am wondering too
@@Unicorn-up3gn I m guessing that the pressure difference across the thoracic wall doesn't matter because of its rigidity due to the ribs and muscles
It's the opposite, lungs want to cave in while the thoracic cavity wants to expand.
You have to consider 2 aspects:
1. When Natural tendencies taken into account:
Of lung=deflation
Of chest wall=expansion(moving outwards)
2. When pleural pressure is taken into account, (which is applicable in the normal dynamic state, so it's what you should consider, because it is a sum of the Integrated effect of natural tendencies and surface tension)
+4mm Transpulmonary = lungs inflate
-4mm TTP = chest moves inwards
So it basically depends on the TP and TTP
Your so genius! Thank you!
Thanks❤
I love how he is apologizing for all the no.s at the end XD biology
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Thank u for this amazing explanation keep going
" Transpulmonary pressure is the pressure difference between that in the alveoli and that on the outer
surfaces of the lungs (pleural pressure), and it is a measure of the elastic forces in the lungs that tend to collapse the lungs at each instant of respiration, called the recoil pressure" - Acoording to Guyton.
In your video, Transpulmonary pressure = +4 and It's going to be inflated.
Is it a contradiction?
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çok iyiydi teşekkürler . ( very good thank youuu :)))
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17:53 recap ❤
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23:46 great video, but the definition I have of transthoracic pressure in my book is (alveolar pressure) - (body surface pressure). Wouldn't that be 'a' - 'c' in your diagram?
Thank you
great
Thanx alot ♥️♥️♥️♥️
What type book you depends in? Ghyton or costanzo ?
Please anyone know,write 👀
Why at 29:10 you took atm pressure as zero, it should be 1? correct me if I am wrong and why?
Tp=+4(tendency to inflate the lung); TTP= -4(tendency to defalte the chest wall)
But, elastic recoil of lung have a deflating tendency and elastic recoil of chest wall have an inflating tendency
So, what is the difference between above two things..??
Hello, I think you made a mistake at 28:15, explaining the transthoracic pressure you said because its -4mmHg its trying to deflate and the chest wall tries to go inwards. At the end of the video you contradict this statement by saying that its for ( the natural OUTWARD elasticity and recoil of lungs ) at 30:32 .
Thank you. , its actually the inward recoil of the chest wall and outward inflation of the lungs ( alveolar space ) so 4 mmHg and -4mmHg at FRC keeps the lung from not distending or collapsing..
Anyone is welcome to join this discussion.
HUHUHUH OMG THANK YOU SO MUCH
Kindly upload your lecture in Hindi too sir...
I am from India 🇮🇳
Your videos are perfect but unable to understand the English....
Sir ,How have i gotten your note???
is there any summarised notes they do?
Why did the lymphatics change position at 29:18?
You ever think about the fact that if you ever get sick at least half the younger doctors treating you will have literally been taught by you😂?
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WOW thank you so much! You're the best. I finally understand this shitty pressure part!
What a guy
17:50
How to download all the notes from this lecture?
You're a gift to every medical student. Keep up the good work
☺
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3:14 “I’m sorry about that” he says ...
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3:55 Pressures
10:08 Reasons why intra-pleural pressure is negative
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Respiratory physiology playlist info
No of videos : 20
Average length of video : 29 minutes, 6 seconds
Total length of playlist : 9 hours, 42 minutes, 16 seconds
At 1.25x : 7 hours, 45 minutes, 48 seconds
At 1.50x : 6 hours, 28 minutes, 10 seconds
At 1.75x : 5 hours, 32 minutes, 43 seconds
At 2.00x : 4 hours, 51 minutes, 8 seconds