Kidshealth The Respiratory System

Your body couldn’t breathe without this system. Which one is it?

• digestive system

• respiratory system

• skeletal system

• circulatory system

The respiratory system is made up of the trachea, the lungs, and the:

• liver

• diaphragm

• esophagus

• pancreases

When you breathe in air, you bring oxygen into your lungs and blow out:

• oxygen

• nitrogen

• carbon dioxide

• hydrogen

When you inhale, your lungs:

• turn purple

• deflate

• inflate

• do a dance

What is the name of the tiny air sacs in your lungs?

• Bronchioles

• ravioli

• alveoli

• bronx

_________ is not good for your lungs.

• exercising

• singing

• smoking

• yelling

The trachea is also called the:

• lung

• diaphragm

• windpipe

• Bronchus

The voice box is also known as the:

• Alveoli

• Larynx

• Trachea

• Motormouth

As you breathe, this contracts and flattens to give your lungs room to fill up with air:

• Larynx

• Lung balloon

• diaphragm

• Bronchiole