the.com/respiratory system

The only machine you own that runs itself, badly, while you sleep and panic.

means The network of organs — nose, throat, airways, and lungs — that moves air in and out of your body and swaps oxygen into your blood for carbon dioxide.

from From Latin 'respirare' — 're-' (again) plus 'spirare' (to breathe). 'Spirare' is the same root behind 'spirit' and 'inspire,' since breath was long taken as the visible proof of life and soul — to breathe out for the last time was, quite literally, to 'expire.'

surface area
lungs unfold to roughly a tennis court
daily volume
you move about 11,000 liters of air
hiccup cause
diaphragm spasming like a confused piston
sneeze speed
exhaled air can hit 100 mph
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