Year 10 Human Gas Exchange

What is the primary function of the lungs in the human body?

• To pump blood

• To exchange gases

• To digest food

• To filter waste

Which structure in the lungs is responsible for the exchange of oxygen and carbon dioxide?

• Bronchi

• Alveoli

• Trachea

• Diaphragm

What is the name of the tube that carries air from the throat to the lungs?

• Oesophagus

• Trachea

• Bronchiole

• Alveolus

How many lungs does a human typically have?

• One

• Two

• Three

• Four

What is the role of the diaphragm in the respiratory system?

• It filters air

• It pumps blood

• It aids in breathing by contracting and relaxing

• It digests food

What is the approximate surface area of the alveoli in an adult human lung?

• 10 square metres

• 50 square metres

• 70 square metres

• 100 square metres

Which gas is primarily taken in by the lungs during inhalation?

• Carbon dioxide

• Nitrogen

• Oxygen

• Helium

Tags

NGSS.MS-LS2-3

What happens to carbon dioxide in the lungs?

• It is absorbed into the bloodstream

• It is exhaled out of the body

• It is converted into oxygen

• It is stored in the lungs

What is the function of the bronchi in the respiratory system?

• To exchange gases

• To carry air to the alveoli

• To filter blood

• To produce mucus

Which of the following best describes the process of gas exchange in the alveoli?

• Oxygen is absorbed into the blood, and carbon dioxide is released from the blood

• Carbon dioxide is absorbed into the blood, and oxygen is released from the blood

• Both oxygen and carbon dioxide are absorbed into the blood

• Both oxygen and carbon dioxide are released from the blood

Tags

NGSS.MS-LS1-3