Human Gas Exchange 1

What gas is 78% of inspired air?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Water Vapour

What gas is in 21% of inspired air?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Water Vapour

How many percentage of oxygen is in expired air?

• 78%

• 21%

• 16%

• 4.5%

How many percentage of carbon dioxide is in expired air?

• 78%

• 21%

• 16%

• 4.5%

The exhaled air from our body consists mostly of

• carbon dioxide.

• nitrogen.

• oxygen.

• water vapour.

This is a diagram of the human lung.

What is organ X?

• Bronchi

• Bronchioles

• Trachea

• Alveoli

This is a diagram of the human lung.

What is organ Y?

• Bronchi

• Bronchioles

• Trachea

• Alveoli

This is a diagram of the human lung.

What is organ Z?

• Bronchi

• Bronchioles

• Trachea

• Alveoli

This is a diagram of the human lung.

What is organ W?

• Bronchi

• Bronchioles

• Trachea

• Alveoli

Which statement is false?

• Humans breath in oxygen and breath out carbon dioxide

• The inspired air goes into our nose and to our lungs

• Humans breath in carbon dioxide and breath out oxygen

• The expired air goes from our lungs and out of our nose