GAS EXCHANGE Flashcards
1
Q
explain how human lung tissue allows efficient gas exchange （４）
A
Alveoli provide a large surface area, alveoli walls are 1 cell thick,, ALveoli walls are moist, flowing blood contains concentration gradient
2
Q
what are the functions of alveoli (3)
A
Has a large surface area, has a rich blood supply, and walls are one cell thick
3
Q
What do alveoli carry
A
Deoxygenated blood
