Respiratory System Vocabulary

Front

Process of breathing; moves air in and out of the body

Back

respiration

Front

Air enters through this organ where it is moistened, warmed, and cleaned.

Back

nose

Front

Back of the throat, lined with cilia and hair

Back

pharynx

Front

Rings of cartilage around a tube that carries air to the lungs

Back

trachea

Front

A flap of tissue that covers the trachea

Back

epiglottis

Front

Two spongy organs that expand when air moves in

Back

lungs

Front

A large tube that branches into two and enters each lung

Back

bronchus

Front

These smaller tubes that resemble branches are attached to the bronchus.

Back

bronchioles

Front

At the end of the bronchioles, these are air sacs that are surrounded by blood vessels.

Back

alveoli

Front

Air tight space in upper body that contains the heart and lungs

Back

pleural sac