Respiratory System
Name: …………………..
Words to include:
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Epiglottis
Diaphragm
Bronchus
Bronchioles
Trachea
Alveoli
Intercostal muscles
Key Words:
Intercostal Muscles – Found between the ribs, contracting and
relaxing during the breathing process.
Epiglottis – This is a tiny flap of cartilage and the back of the
tongue. It covers the windpipe during swallowing.
Trachea (Windpipe) – Has rings of cartilage along its length to
allow the tube to be flexible and to keep the airway open.
Alveoli – Tiny air sacs; there are millions in the lungs. Gaseous
exchange takes place here. Their walls are thin so that gases
can pass through them. They are covered with millions of
capillaries. Each alveoli is smaller than grain of salt.
Bronchioles – Smaller sub-divisions of the bronchi leading to
the alveoli.
Diaphragm – Sheet of muscle dividing the chest cavity and the
abdominal cavity.
Bronchus – Two tubes that branch from the trachea to
continue the air flow nearer to the lungs.