Lungs and Ventilation - GCSE Biology (9-1)

This video covers the following objectives from Edexcel IGCSE Biology 9-1
2.46 Describe the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes.
2.47 Understand the role of the intercostal muscles and the diaphragm in ventilation.
For a PowerPoint covering this topic visit www.mrexham.com

[@ellakurm6781]

Fantastic video! But one important thing you missed out about the intercostal muscles. There are 2 types: External intercostal muscles and Internal intercostal muscles, when you breathe in, only the EXTERNAL intercostal muscles contract, bringing the ribcage up and out. But when you breathe out, the INTERNAL intercostal muscles contract, bringing the ribcage down and in. Thank you for the great video really helped me.

[@MrExhambio]

That is spot on! I left it out of the video as for the course I teach the students don’t need to know that detail but you’re right

[@anushaperera2081]

@@MrExhambioWhere are the internal intercostal muscles and external intercostal muscles each located at?

[@MrExhambio]

Both between the ribs

[@ritaaltiti3203]

Bro u deserve better wallah

[@chinmaytrivedi3305]

I searched up ventilation igcse and could not find any good videos and then i finally came upon this video and in basically 3min understood the whole sub topic. THANK YOU VERY MUCH. :) :) :) :) :) :) :) :) :O:)

[@ogalienman]

My bio teacher sent me this vid to help as I didn't understand this topic well, thank you for explaining!

[@ogalienman]

@Frankie Key dumb bot lol

[@seanaaswehli8961]

بارك الله فيك على هذه الدروس الاكثر من رائعة والتي كانت عونا كبيرا لابني في استعداده لامتحانه المقبل في شهر ماي .... كنت اكثر من رائع، حفظك الله ورعاك وادامك بالصحة والراحة والسعادة... وكل عام وانت بالف خير

[@munaaliii]

this video has been of great help to my brother who is currently in yr 10 thanks so much sirrr RESPECT

[@remestario]

Perfect video as always, sir! Would love to see a video about the tissues of our body. Such as, connective, epithelial, etc.

[@ilovehongjoong]

describing it as a tree is the smartest thing omg thank u 🙏🏽

[@MK7_FR]

This video is the only video i understood THANK YOU SO MUCH FOR EXPLAINING ITTTTT

[@midnightnoir2478]

This helped me understand ventilation a lot better! Thank you! Also I like the Ghostbusters badge :)

[@tanjimozumder7753]

THANK YOU SO MUCH

[@abdullahkortam3669]

thanks for your effort

[@nihalbendaha3785]

really helpful thanks

[@proggadebnath338]

Sir thank you for your hard work

[@azzyntll]

Less than 2 weeks left😢

[@shxn1247]

I did this in class yo

[@wisdom-onwuka]

Nice video

[@gowrishanker4802]

Sir tell me about multiple sub Pleurisy fibro nodular opacities how to over come

[@questionabile724]

@@Prokiller20037 it’s English

[@alo3294]

tysm

[@anthonyharvey556]

what lung mean

[@amzzxx1416]

Omg ily tysm

[@anthonyharvey556]

what gas

[@cecilyngoka9677]

L like science homework and understanding ventilator system

[@cecilyngoka9677]

Ok👌👌👌

[@anushaperera2081]

😂😂🤣🤣

[@protaken1818]

Hi

[@Deekk]

sound

[@fizzmund3923]

wow

[@ellisbowman7716]

Sheeee

[@k.poojeethapooja6484]

My bio teacher sent me this vid to help as I didn't understand this topic well, thank you for explaining!