Respiratory System

Door 1

100

This is the organ we breathe with that is not a mouth.

nose

200

This gas is necessary for us to live.

oxygen

300

This tube extends from the larynx to the bronchioles.

trachea

400

These split off from the trachea to carry air to the lungs.

bronchi

Door 2

100

They are two large sacs that are used for breathing.

lungs

200

This is the process by which we take air into our bodies.

inhalation

300

These tiny sacs are where gas exchange takes place.

alveoli

400

This organ contains our vocal chords.

larynx

Door 3

100

We use this part of the body to eat and breathe.

mouth

200

This toxic gas is expelled from the body.

carbon dioxide

300

This is the exchange of carbon dioxide for oxygen in alveoli.

gas exchange

400

These are small tubes that extend from a bronchus into the lungs.

bronchioles

Door 4

100

This is the muscle below the lungs that relaxes and contracts during breathing.

diaphram

200

This is the process by which we expel air from our bodies.

exhalation

300

This is the system of tissues and organs used by the body to breathe.

respiratory system

400

This is the space behind the nose that connects to the throat.

nasal cavity