The Movement of Gases (PK1) Flashcards
1
Q
How many generations of airways are there?
A
23
2
Q
What is the conducting zone?
A
Areas where gas exchange cannot take place
3
Q
What is the transitional and respiratory zone?
A
Areas where gas exchange can take place
4
Q
Which generations of airways form the conducting zone?
A
1-16
5
Q
Which generations of airways form the transitional and respiratory zone?
A
17-23
6
Q
Equation linking gas flow (V̇), area of airways (A) and gas speed (u)
A
V̇ = A x u
7
Q
By what is gas exchange beyond generation 17 determined by, and why?
A
- Diffusion
- As gas speed is down to speed of molecular diffusion
