Alveolus used in a sentence

Alveolus in a sentence as a noun

Com/blog/oxygen-and-brain-damage/ "The coronavirus damages both the wall and lining cells of the alveolus as well as the capillaries. The debris that accumulates because of all of that damage lines the wall of the alveolus the same way paint would cover a wall...

This is why oxygen delivery at higher than atmospheric concentration may be required for diffusion across the alveolus thoracostomy only drains the space between the lung and the pleural membrane.

Additionally, the distance that oxygen needs to diffuse before it reaches hemoglobin is increased: rather than just the lining of alveoli and capillaries, it has to first dissolve into the fluid gunk filling the space, then diffuse through the fluid, then pass through the lining of the alveolus and capillary. To top it off, water doesn't have great solubility for oxygen, and atmospheric air is mostly nitrogen anyways.