posted by Josh .
how much skin covers 1 of your alveoli?
zero. skin is epidermis, which is not in your lungs.
No i mean, like the stuff that covers your alveoli
Use a fake name, Josh. Such as butterfly, or sister2, or honeybeebob. The purpose we have it is to track students questions if they have a followup.
A typical pair of human lungs contain about 700 million alveoli, producing 70m² of surface area.
area of each alveoli=totalarea/totalnumber
= 70*10^6 cm^2/700*10^6
= .1 cm^2