The Respiratory System

Front

Contains little hairs that help filter the air you breathe in, blocking dirt and dust from getting into your lungs. Options: mouth, nasal cavity, trachea, bronchi.

Back

nasal cavity

Front

Opening, along with the nasal cavity, for breathing.

Back

mouth

Front

Connects the mouth to the trachea.

Back

pharynx

Front

Voice box; contains the vocal cords.

Back

larynx

Front

Windpipe; takes air from your mouth to your lungs.

Back

trachea

Front

Elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed.

Back

lungs

Front

The branches of the trachea which take air into and out of the lungs.

Back

bronchi

Front

Smaller branches of the bronchi.

Back

bronchioles

Front

Tiny air sacs in the lungs where gas exchange takes place. Oxygen in / carbon dioxide out.

Back

alveoli

Front

The muscle beneath the lungs which makes breathing possible.

Back

diaphragm