Embryology of the Lungs (Easy to Understand)

The development of the lungs explained in less than 10 minutes.
If you are completely new to embryology and you want to understand it quickly, this should be the first video you watch:
- • Introduction to Embryo...
Post any questions you have about the video below, I read all the comments:
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Summary for your notes:
- Formation of the lung buds: at 4 weeks of gestation, the respiratory diverticulum (lung bud) appears as an outgrowth from the ventral foregut. Retinoic acid from surrounding mesoderm is the initiating factor (as it causes up-regulation of transcription factor TBX4) - not spoken about in video to keep things simple.
- Epithelium of the lung is derived from foregut.
- Connective tissue, muscle, and cartilage is from splanchnic mesoderm.
- Parietal pleura is from somatic mesoderm; and visceral pleura is from splanchnic mesoderm.
- Tracheoesophageal ridges separate the lung bud from the foregut, and fuse to form a tracheoesophageal septum.
- Lung buds form bronchial buds which form into the right and left main bronchi.
- Growth is caudal and lateral to fill the pericardioperitoneal canals.
10 tertiary bronchi (segmental) are developed on the right, and 8 in the left. These correspond to the bronchopulmonary segments in an adult lung.
- Terminal bronchioles divide to form respiratory bronchioles and these divide into alveolar ducts.
- The terminal sacs are initially cuboidal epithelium but the distal portion become squamous as the vascular supply grows near it - these are the Type 1 alveoli.
- Type 2 produce surfactant.
Congenital abnormalities:
- Esophageal atresia: abnormalities in partitioning of the oesophagus and trachea. Fistulas may also persist
- The three types spoken about in the video make up the most common types.
- The proximal blind ended esophagus, and a tracheoesophageal fistula to the distal part of the esopahgus is the most common type (90%).
- There are two other types which are much rarer (1% each) so it wasn't spoken about in the video. They include: (1) a proximal fistula, and a distal blind-ended esophagus, and (2) a fistula to the trachea from the esophagus both distally and proximally.

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[@sophieb.4743]

You say in the end, that you appreciate us taking the time. Well, thank YOU for taking the time to create this awesome video! :-)

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I would have never guessed that I´ll like embryology. Thank you.

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Thank you Dr. Minass, I watch your videos often and find them very helpful. Your community appreciates you!

[@anthonypumilia7334]

Thanks for making these! It's tough to find good embryo resources and your videos have been really helpful.

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OMG, I wasn't understanding anything during my embryology lectures. I thought that i will not be able to answer the exam's embryo questions ,but after watching your videos, it was like just revising the lecture not studying it. Thank you so much

[@malaky9498]

OMG i couldn’t believe how easy you made it , thank you sir .

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Excellent video on a rarely explained topic on the internet. Keep making more videos please. Much thanks!

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NICU nurse this is incredible loved the detailed explanation I'll be watching all your vids ta

[@sachintommy2246]

great video. Can't explain how helpful this was in helping me understand the respiratory system

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So much effort in this! Thank you Sir! Really appreciate it:)

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Good Stuff Doc! Thank you for doing this as there is a definite lack easily accessed resources on embryology.

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wow thanks a lot! I used to have embryology but you make it way too easy to understand! Thanks, I really enjoyed it!

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Thankk youuu soo much Short, simple and easy to understand

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usman ahmed thank you very kindly 🙂

[@yagmurhaciahmetoglu5403]

Best lung development video on youtube!! Thank you

[@minass]

Whoa, you watched them all? Thanks for watching and I agree hehe

[@pluto7989]

You made it so much easier thank you!

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This is really beautiful Thank you

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Thank you so much😭 this is so easy to grasp🎉

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thank you sir, full clarity in short duration

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Thank you so much, really made it easier

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This was very helpful, as a MS1 I really appreciate you making this video.

[@minass]

No problem at all 👌

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This video helps me so much. Thank you 🙇

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Loved you explanation, the breakdown and everything is just amazing!

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Thanks Ijlal

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thank you so very much short and to the point,i just subscribed

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Thanks for the sub!

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Thanks for the amazing video! It's truly remarkable how you explained this topic in such a short time. Keep up the great work and wish you all the best for your future endeavours =)

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Jazim Ahmed thanks for watching and for the comment Jazim! It’s much appreciated 🙂

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Absolutely Phenomenal, helped a lot; thank you.

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Your videos are classic, so much passion in them. Thank you so much😊😊

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Glad you like them!

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THANK YOU SO MUCH

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great job!

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Well done! Please make some advanced videos about embryology.

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Thank YOU!!!!

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Great video These topics are rare on net

[@minass]

Thanks Ukhan

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Very rare

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Thank You so much

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Thank you. Your videos are very helpful in understanding new concepts about embryology

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Richielyn Mae Mi?on thanks for watching 🙂

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Thank you sp much!!!

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i got an A in my histology and embryology course and i want you to know that you helped a lot. every embryology topic you covered i ended up understanding perfectly. so yeah thanks!

[@minass]

asser mcfuck you’re very welcome. What’s your real name? This is the second comment you left I remember this funky name 😂

[@elainelee1174]

Clearly explained the details and the timeline of the development! Helped a lot:)

[@minass]

Thanks Elaine!

[@mobinad3869]

thank you so much

[@vishant_MUFC]

Really your method of teaching is fantastic.

[@minass]

Glad you think so!

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I can't thank you enough, these videos are so helpful! Wish my teachers were this enthusiastic about teaching, but you are a gift

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Haha wow being called a gift is definitely a new one. Thanks ☺️

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Thank you too!

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Thank you sir 🙏

[@abdalkahar22]

Your explanation was awesome , thank you sir .

[@minass]

Thanks and welcome

[@arfatalia3622]

Thank you so much. keep up the good work!

[@minass]

Arfa Talia will do 👍. All the best

[@priyarajeshanepla9465]

Thank you for such a beautiful Explanation! :)

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You're very welcome!

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actually ilike the way you explain i hope to se you explaining head and neck courses specially cranial nerves

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Amazing thank you

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Thank you a lot

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Just cleared all my doubts thanks a lot

[@minass]

Welcome 👍

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Marvellous.... I just can't explain the happiness that I felt after seeing whole development of lungs just in 9 minutes and in extremely smooth way...... My first video at this channel! But it will end with me forever❤😊😊😊😊

[@minass]

Thank you so much 😀

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Well done Anna!

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Thank You

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Thanku!! Not only for this but for all the videos that u have made sir! Really helped alot😊

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Most welcome 😊

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Niclas Møller you’re welcome!

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Will do Julie!

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I was reading this lecture a lot and I didn’t understand anything! Now after this short video it’s too easy for me , thanks very much 😭🙏🏻😍

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Glad it helped!

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kamrul alam you’re welcome 😊

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Thank you.

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Welcome!

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Thank you soo much for this great video!! Maybe you can upload a video for embryology of eye and ear.

[@minass]

Sure I can do that when I have the time

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No worries!

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Always welcome

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Nice explaining

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Thanks for liking

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Embryology used to scare the hell out of me in 1st year mbbs .......now I am reading genitourinary embryology as I am a urologist and need proper understanding of paediatric urology.........your videos truly have cleared my basic concepts and understanding of the human body .....you are doing an awesome job

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Great to hear a specialist in urology watches these and that its still helpful. Thanks Kartik 😉

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We were unfortunately given to study the embryo models by ourselves during this quarantine as it wasn't possible to teach for 'em BUT u made this sooo easily understandable, thankyou so much for these videos!✨

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Thank you!

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No worries!

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Love you too! Thanks for watching

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Thank u sir❤

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Most welcome

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Thank u so much sir.....

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you're welcome! Thanks for watching Narendra

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Thank you

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venkatesh valapala 👌

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helpful thank you

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💪

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PLEASE DO THE DEVELOPMENT OF THE PRIMITIVE MOUTH

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Very welcome

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Great video Would love if you could zoom on to the diagram that you are explaining.

[@minass]

VAIBHAV MITTAL I’ve uploaded the whiteboard notes on Facebook so you can download it and add your own notes to it while watching the video 🙂

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Minass thank you very much 😃

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For bonus points!

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[@minass]

I will soon!