Respiratory system

are tiny air sacs at the end of the bronchioles where the exchange of oxygen and carbon dioxide take place.

• alveoli

• capillaries

• bronchi

• bronchioles

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

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

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

The main ORGAN responsible for breathing is:

• the Brain

• the Lungs

• the Liver

• the Kidneys

The process of inhalation or inspiration takes place as the diaphragm contracts, flattens and the chest cavity enlarges.

• True

• False

The left lung is a little bit smaller than the right lung, because_______________________________.

• The right lung is more important.

• The left lung has other jobs.

• The left lung needs to make space for the heart.

the layer of muscle between the lungs and the stomach, used to control breathing.

• trachea

• lung

• diaphram

What is the name for this system?

• Skeletal system

• Digestive system

• Respiratory system