Chapter 1 Flashcards
1
Q
What are the Airways Divided into?
A
- Conducting Zone
- Respiratory Zone
2
Q
What is the volume of the anatomic Dead Space?
A
- 150ml
3
Q
What is the volume in the alveolar region?
A
2.5 - 3L
4
Q
How does gas move in the conducting zone?
A
- By bulk flow down a pressure gradient
5
Q
How does gas move in the alveolar region?
A
- Chiefly by diffusion
6
Q
How thin is the blood-gas interface?
A
0.2-0.3um
7
Q
What is the surface area of the blood-gas barrier?
A
50-100m^2
8
Q
How many alveoli make up the blood-gas barrier?
A
- 500million
9
Q
How can the blood-gas barrier be damaged?
A
- large increases in capillary pressure
10
Q
Which zone has blood-gas exchange?
A
- Respiratory Zone
11
Q
What are the important Conduction Zones?
A
- Zone 0: Trachea
- Zone 1-16: Bronchi, Bronchioles, Terminal Bronchioles
12
Q
What are the important Respiratory Zones?
A
- Zone 17-19: Respiratory Bronchioles
- Zone 20-22: Alveolar Ducts
- Zone 23: Alveolar Sacs
13
Q
What Zones does the Conducting Zone consist of? What about the Respiratory Zone?
A
- Conducting Zone: Zones 0-16
- Respiratory Zone: Zones 17-23
14
Q
What receives the entire cardiac output from the heart?
A
- The lungs
15
Q
How long are the capillaries in the blood-gas barrier?
A
7-10um
