Lecture 18 and 19

Question 1

What is emphysema?

Answer 1

It is a disease characterized by dilation of the alveolar spaces and destruction of the alveolar walls.

Question 2

What is the blood air barrier comprised of the alveolar and capillary walls?

Answer 2

1. Alveolar cell layer
2. Fused basement membrane
3. Capillary endothelium

Question 3

A person with pulmonary fibrosis has increased thickness of the Blood Air Barrier. Which of the following statement is most likely to be correct for this person?
A. His breathing frequency will be reduced
B. His blood O2 will be reduced
C. His blood carbon dioxide will be reduced
D. His hematocrit will be reduced
E. His heart rate will be reduced

Answer 3

B

Question 4

Oxygen is carried in two forms

Answer 4

1. Dissolved O2

2. Bound to hemoglobin in RBCs

Question 5

Maraea goes to the gym and runs on the treadmill. Which statement is correct:
A. Her alveolar ventilation is decreased
B. Her breathing frequency is decreased
C. Her tidal volume is decreased.
D. Her hemoglobin affinity for O2 near skeletal muscle is decreased
E. Her respiratory minute volume is decreased

Answer 5

D. Release it not bind.

Question 6

What happens to respiratory minute volume when arterial Blood pressure goes down?

Answer 6

Increases uptake of air.

Question 7

The O2-haemoglobin relationship is

Answer 7

Sigmoidal

Question 8

Which of the following is a common pulmonary function test? 
A. Manometry 
B. Barometry 
C. Spirometry 
D. Calorimetry

Answer 8

C.