Between breathing in and out there’s a gap of two or three seconds.
How is it possible that every cell in our body absorves O2, uses it, and expels CO2?
I can’t even think of the air going from my nose to my big toe that fast.
In: 1
The O2 doesn’t spread that fast.
It’s stored in the blood through the spongy cell in the lung, delivered by heart pumping consequently.
For the O2 to be delivered from the lung to arteries to capillaries to big toes, it’ll take fairly long time.
The urge of breath is triggered by co2 level in the blood stream and the threshold is set to be lower than actually harmful level to individual cells to proactively get rid of it from bloodstream.
It’s a long conveyer belt that carries both food and garbage. Control center ask home service periodically to clean the belt and dump food at the loading bay before the whole system gets full of garbage. The food eventually reach the other end of the conveyer belt together with some garbage that home service didn’t manage to take out in time. Cells need that garbage too apparently.
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