Respiratory System

To obtain oxygen and get rid of carbon dioxide we use ....

• Circulatory system

• Excretory system

• Respiratory system

• Digestive system

When we inhale we are...

• breathing in

• letting air out

We expell...

• Oxygen

• Carbon dioxide

• Nutrients

When the air comes in, our diaphragm..

• Contracts

• Relaxes

When we let the air out, our diaphragm...

• Contracts

• Relaxes

The main organ of our respiratory system is...

• heart

• stomach

• bladder

• lungs

Click the ODD one out

• diaphragm

• bronchus

• lung

• sweat gland

Air passes from our nose and mouth to the lungs via the oesophagus.

• TRUE

• FALSE

Nº1

• trachea

• nose

• lungs

• bronchi

Nº4

• bronchi

• larynx

• trachea

• oesophagus