Gaseous Exchange

What is the process called where gases are exchanged between the blood and lungs?

• Inhalation

• Respiration

• Exhalation

• Circulation

Where does the external exchange of gases occur?

• Between the blood and muscles

• Between the alveoli and capillaries

• Between the heart and lungs

• Between the brain and blood

What happens to carbon-dioxide during external respiration?

• It is absorbed by the alveoli

• It is converted into oxygen

• It is expelled into the atmosphere

• It diffuses into the blood

What is the role of haemoglobin in the respiratory system?

• It transports carbon-dioxide in the blood

• It attaches to oxygen for transport in the blood

• It diffuses oxygen into the alveoli

• It converts carbon-dioxide into oxygen

What is internal respiration?

• Exchange of gases between the alveoli and capillaries

• Exchange of gases between the blood and lungs

• Exchange of gases between the capillaries and muscle cells

• Exchange of gases between the heart and blood