Quiz 4, Card set 3

Question 1

How atmospheric and alveolar air differ in composition

Answer 1

Atmospheric air:
21% oxygen
0.04% carbon dioxide
variable humidity.

Alveolar air: Lower oxygen (14-16%)
higher carbon dioxide (around 5%)
increased humidity

Question 2

The relative PO2 and PCO2 of inspired air

Answer 2

Relative PO2 ( inspired air): approximately 159 mmHg
Relative PCO2 (inspired air): around 0.3 mmHg.

Question 3

The relative PO2 and PCO2 of expired air

Answer 3

The relative P​O​2 (expired air): approximately 116 mmHg

The relative P​CO2 (expired air): approximately 40 mmHg

Question 4

The relative PO2 and PCO2 of oxygenated blood

Answer 4

P​O​2 of oxygenated blood:around 95-100 mmHg

PCO2 of oxygenated blood: approximately 35-45 mmHg

Question 5

The relative PO2 and PCO2 of deoxygenated blood

Answer 5

PO2 of deoxygenated blood: around 35-40 mmHg

PCO2 of deoxygenated blood: approximately 40-45 mmHg