Respiration Watch

iiarpitaii
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Could someone please read through this and let me know if the information is valid? Tysm!

Inspiration and expiration
Inspiration (breathing in)
- The external intercostal muscles contract and the internal intercostal muscles relax. Thus, the ribcage swings upwards and outwards and the sternum is raised.
- The diaphragm muscles contract. Thus, the diaphragm flattens.
- The volume of the thorax increases, and the pressure decreases.
- The lungs expand so the pressure in the lungs decreases to lesser than the atmospheric pressure. Thus, air rushes into the lungs.

Expiration (breathing out)
- When one breathes out, the external intercostal muscles relax and the internal intercostal muscles contract. Thus, the ribcage swings downwards and inwards and the sternum is lowered.
- The diaphragm muscles relax. Thus, the diaphragm arches upwards.
- The volume of the thorax decreases, and the pressure increases.
- The lungs are compressed so the pressure in the lungs increases to higher than the atmospheric pressure. Thus, air rushes out of the lungs.
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macpatgh-Sheldon
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Firstly well done that you are up at 5 a.m. odd (best time to study: a) you are fresh and alert, so efficiency/concentration are max b) everyone else is in slumber, so it is nice and quiet).

Yes, very good description of (strictly) ventilation (respiration is the biochemical process whereby "food" is oxidized to provide energy in the form of ATP, CO2 and H2O).

M
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iiarpitaii
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Hehe I'm not from the UK
(Original post by macpatgh-Sheldon)
Firstly well done that you are up at 5 a.m. odd (best time to study: a) you are fresh and alert, so efficiency/concentration are max b) everyone else is in slumber, so it is nice and quiet).

Yes, very good description of (strictly) ventilation (respiration is the biochemical process whereby "food" is oxidized to provide energy in the form of ATP, CO2 and H2O).

M
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