Respiratory System

The main function of the respiratory system is to supply the blood with ___.

• oxygen

• water

• nitrogen

• carbon dioxide

Why do we need to take in oxygen to our body?

• 1. Oxygen is needed for cells to produce bloods.

• Oxygen is needed to for cells to function properly.

• Oxygen is needed to directly fight off viruses.

• Oxygen is needed to reduce fat in the body.

What is the major organ of the respiratory system?

• heart

• lungs

• diaphragm

• kidneys

Which of the following organs is not part of the human respiratory system?

• Eyes

• Nose

• Lungs

• Brain

The tiny hairs in the nose that filter air entering the body are called ___.

• mucus

• cilia

• trachea

• bronchi

What is the organ labelled as A?

• diaphragm

• bronchus

• trachea

• alveoli

What is the organ labelled as D?

• diaphragm

• bronchus

• trachea

• alveoli

What is the organ labelled as C?

• diaphragm

• bronchus

• trachea

• alveoli

What is the organ labelled as B?

• diaphragm

• bronchus

• trachea

• alveoli

What is the main function of trachea?

• taking the air into the body

• carry air in and out of your lungs

• a place for gas exchange

• carry air and lead it to the alveoli