Brave teacher saying a textbook is wrong, not sure which book either as there are a few for the course! All I can say is that as you breath in (inspiration) your lung volume increases the spirometer volume decreases. If you take an extra deep breath in the spirometer will continue to decrease (inspiratory reserve volume).
The trace goes down as the oxygen gets used up...the amount of CO2 never decreases...though it is absorbed of course by the soda lime ...so doesn't affect oxygen volumes which can be measured ...i.e. consumption of O2 in dm3 per minute
Great vid, one question, my biology teachers told us the ocr biology text book is wrong and inspiratory reserve volume and expiratory reserve volume is the opposite on the spirometer trace, confused. Thanks
+Laura Choi going off of the notes i made during the video, a counter balance removes the resistance for breathing, without it, the subject would be forcefully breathing in and out, this would mean it would not be showing a clear result of tidal volume, as tidal volume is a normal breath rather than a forced or strenuous one, so yes, it does ensure tidal volume :)
I never knew that the soda lime was why the line started going down, always found that odd, thank u sm!
just waiting for the "who's watching in quarantine?" comments
who’s watching this in lockdown 3.0 ( ͡° ͜ʖ ͡°)
Thank you! Extremely helpful!
Brave teacher saying a textbook is wrong, not sure which book either as there are a few for the course! All I can say is that as you breath in (inspiration) your lung volume increases the spirometer volume decreases. If you take an extra deep breath in the spirometer will continue to decrease (inspiratory reserve volume).
theres actually quite a number of mistakes in the ocr textbook for some reason
The trace goes down as the oxygen gets used up...the amount of CO2 never decreases...though it is absorbed of course by the soda lime ...so doesn't affect oxygen volumes which can be measured ...i.e. consumption of O2 in dm3 per minute
That tree on the poster at the beginning of the video is the conservative party logo. Is this subtle Tory propaganda?
Great vid, one question, my biology teachers told us the ocr biology text book is wrong and inspiratory reserve volume and expiratory reserve volume is the opposite on the spirometer trace, confused. Thanks
thank u i love u
you can use the same method for CO2, to calculate O2 right ?
Can you do more unit 1 vids pleaaasseee
Theres not enoupgh as bio ocr content on you tube
Thanks
If you cant jus let me know at least :)
Shazia Nawaz I will when I get time- lookout over Easter for revision purposes.
So is it like 0.5 absorbed for 1min??
Hello, great video! I don't get why you need a "counterbalance", was it to ensure a tidal volume or something?
+Laura Choi going off of the notes i made during the video, a counter balance removes the resistance for breathing, without it, the subject would be forcefully breathing in and out, this would mean it would not be showing a clear result of tidal volume, as tidal volume is a normal breath rather than a forced or strenuous one, so yes, it does ensure tidal volume :)
what are you doing now it has been 3 years?
@@xstreamnightgamer4788 what are you doing noew, its been a year?
@@YahyeIbrahim Im currently at Uni studying chemical engineering.
@@xstreamnightgamer4788 nice
hey, when calculating co2 absorbed do u find the area of the triangle?
nope
@@xstreamnightgamer4788 then what?
@@AmnaQamar973 just the difference between the two lines if that makes sense
ty!
Yeet