Respiratory System

When we breath in the diaphragm...

• Contracts

• Relaxes

When we breathe out the diaphragm...

• Contracts

• Relaxes

When we breathe out, the ____________ leaves our lungs.

• Carbon dioxide

• Oxygen

Which are the main organs in the respiratory system?

• Heart

• Stomach

• Lungs

• Nose

We breathe in carbon dioxide and breathe out oxygen

• True

• False

When we breathe, we take in ....

• nitrogen

• carbon dioxide

• oxygen

• hydrogen

The respiratory organ in the picture is called ....

• lung

• trachea

• bronchioles

• bronchi

Why is the left lung slightly smaller than the right lung ?

• to give space for the heart

• to breathe easily

• to give space for the stomach

• to swallow easily

The other name for trachea is ....

• food pipe

• wind pipe

• lung

• heart

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