1
Q
thin, simple squamous epithelium
90% of alveoli
devoted to gas exchange
A
type I pneumocytes
2
Q
secretory cells that make surfactant
A
type II pneumocytes
3
Q
reduces surface tension and makes lungs easier to inflate
A
surfactant
4
Q
what makes up the alveolus
A
simple squamous epithelium and basement membrane
5
Q
what makes up the alveolar capillary
A
endothelium and basement membrane
