Respiratory System

When we breathe in...................enters our lungs and passes into the blood.

• oxygen

• carbon dioxide

The windpipe is also called

• trachea

• alveoli

They are two sacks protected by the ribs.

• alveoli

• lungs

Tags

NGSS.MS-LS1-3

Inside the lungs there are lots of little sacks called.......

Here, oxygen passes into the blood and carbon dioxide leaves the blood.

• lungs

• alveoli

Tags

NGSS.MS-LS1-3

When we ................... carbon dioxide leaves our body.

• breathe in

• breathe out

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 only externally visible part of the respiratory system

• Eyes

• Nose

• Pharynx

• Larynx

Which part of the Respiratory System plays a major role in speech?

• nose

• pharynx

• larynx

• trachea

Which is not a job of the respiratory system?

• takes in oxygen

• gets rid of carbon dioxide

• moistens air

• makes ATP

Tiny hairs that move particles in the nose are called

• mucus

• vocal cords

• cilia

• flagella