Gaseous exchange in lungs Flashcards
1
Q
Diffusion
A
Movement of gas from an area of high concentration to an area of low concentration
2
Q
Why are there many alveoli
A
Provide a large for gaseous exchange
3
Q
How does the blood become oxygenated
A
Oxygen is inhaled into the alveoli and diffuses into the blood and surrounding capillaries
