Respiratory Physiology 3

Question 1

Arterial ventilation is less than pulmonary ventilation due to the presence of the anatomical dead space. True/False

Answer 1

True

Question 2

What is the anatomical dead space?

Answer 2

Space within the body where remaining air is not able to take part in gas exchange.

Question 3

Perfusion is the rate at which _____ passes through the ______ .

Answer 3

blood

lungs

Question 4

What 4 factors influence the rate of gas exchange across the alveolar membrane?

Answer 4

Partial pressure gradient of oxygen and carbon dioxide.
Diffusion coefficient off oxygen and carbon dioxide.
Surface area of alveolar membrane.
Thickness of alveolar membrane.

Question 5

What is the partial pressure of a gas?

Answer 5

The pressure that one gas within a mixture of gases would exert if it were the only gas occupying the volume with the mixture at a constant temperature.

Question 6

What is pulmonary ventilation?

Answer 6

The volume of air breathed in and out per minute.

Question 7

What is alveolar ventilation?

Answer 7

The volume of air exchanged between the alveoli and the outer atmosphere per minute.