Gas Carriage - Partial Pressures

Gas exchanged in the alveoli is called

• Internal respiration

• External respiration

• Cellular respirartion

• Pulmonary respiration

What is the partial pressure of a gas?

• The pressure of a gas being partially related to its volume

• The pressure exerted by an individual gas within a mixture of gases

• The pressure of a gas being partially related to the diameter of a tube

• The pressure of a gas being partially related to the length of a tube

If atmospheric pressure is roughly 100kPa. What is the partial pressure of Oxygen?

• 2100 kPa

• 210 kPa

• 21 KPa

• 2.1 KPa

Which of the following would increase the diffusion of alveolar gas from the alveolar into the blood?

• Decreased partial pressure

• Increased partial pressure

• Increased membrane thickness

• Decreased membrane thickness

In normal atmospheric air, which gas has the highest partial pressure?

• Nitrogen

• Oxygen

• Carbon dioxide

• Water vapour