CH 23 Part 1

Question 1

Why is O2 needed?

Answer 1

For ATP production and Co2 disposal

Question 2

O2 moves from?

Answer 2

Alveoli to blood

Question 3

Co2 moves from?

Answer 3

Blood to alveoli

Question 4

Where is the site for O2 and Co2 exchange?***

Answer 4

Alveoli

Question 5

What is the conducting zone?***

Answer 5

The area O2 has to pass to get to the lungs

Question 6

Conduction zone function?***

Answer 6

Transport air

Question 7

Which structures make up the conducting zone?***

Answer 7

1. Nose
2. Nasal cavity
3. Pharynx
4. Larynx
5. Trachea
6. Bronchus

Question 8

Why is simple squamous epithelium good for gas exchange?

Answer 8

Its very thin

Question 9

Function of nasal cavity?***

Answer 9

1. Warms air
2. Trap dust, microbes and foreign material in mucus
3. Humidifies air
4. Creates air turbulence

Question 10

Bronchoconstriction causes?

Answer 10

Less air through bronchial tree

Question 11

Bronchodilation causes?

Answer 11

More air through bronchial tree

Question 12

Alveolar type 2 cells secrete?***

Answer 12

Pulmonary surfacant

Question 13

Function of pulmonary surfacant?

Answer 13

Coat in side of alveolus and oppose collapse during expiration (exhale)

Question 14

What cell type makes up the respiratory membrane?***

Answer 14

Simple squamous cells

Question 15

What is the respiratory membrane?

Answer 15

Thin barrier between alveoli and pulmonary capillaries

Question 16

What is pneumothorax?***

Answer 16

Free air in the pleural cavity

Question 17

Why is pneumothorax dangerous?***

Answer 17

Causes intrapulmonary pressure and intrapleural pressure to equalize. Lung can collapse.

Question 18

What can cause a pneumothorax to happen?***

Answer 18

Puncture of lung. (stab wound)