Respiratory System - Primary 5

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

When you breathe, your lungs take in ___ and remove ___. 

• air/oxygen
• oxygen/carbon dioxide 
• carbon dioxide/waste 
• waste/air 

Tags

NGSS.5-LS2-1

Which of the following gases is the most abundant on Earth?

• Water vapour

• Nitrogen

• Oxygen

• Carbon dioxide

The air that we breathe out has more __________________ compared to the air we breathe in.

• oxygen

• nitrogen

• dust

• carbon dioxide

The air around us is only made up of nitrogen, oxygen, carbon dioxide and water vapour only. True or false?

• True

• False

All of these things happen to air in the nose except?

• warmed

• flavoured

• moistened

• filtered

Which of the following organs is found in the human respiratory system?

• Lungs

• Heart

• Stomach

• Blood

What is the main bone structure that protects the lungs

• Backbone

• Rib cage

• Skull

• Pelvis