Year 7

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

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

Plants create their own food and oxygen through the process of _____

• Breathing

• Photosynthesis

• Growing

• Mutualism

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

What is the site of gas exchange?

• alveoli

• nose

• lung

• bronchi

The alveoli is surrounded by ____ to bring oxygen to your blood.

• Capilliaries

• Mucus

• Bronchioles

• Platelets

Openings that pull air from outside your body into your respiratory system.

• sinuses

• mouth and nose

• bronchial tubes

• lungs

This area warms, moisturizes, and filters air before going to the lungs.

• trachea

• nose

• mouth

• nasal cavity

____ is also called the windpipe.

• pharynx

• bronchioles

• trachea

• bronchi

What are the smaller branches of the bronchi called?

• bronchioles

• alveoli

• pharynx

• trachea

What gas do plants take in that animal/humans breathe out?

• carbon monoxide

• carbon dioxide

• nitrogen oxide

• oxygen