Respiratory System
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Transcript Respiratory System
Respiratory System
What structures does air pass
through to get to the lungs?
What is the purpose of the
respiratory system?
Supply oxygen to the blood
Eliminate carbon diaoxide
Nose and Sinuses
Air comes in through the nose
Small hairs filter the air
Blood in the lining of the nostrils warms air
Glands produce mucus to trap dust
If air is inhaled through the mouth, the dust can get into
the lungs and irritate the respiratory tract
The small air spaces in the nasal cavity are called
sinuses
Help moisten the air
Inside of the nasal cavity
The pharynx
Opens to the nose and the
mouth for air to pass as
well as food
Tonsils are on both sides of
the pharynx
Can get inflmmed
Larynx
“Adam’s apple”
Food and air pass through
Epiglotis- closes off the
passage way so food only
goes to the esophogus
Also called the voice box
The Trachea
The base of the larynx joins
the trachea
Called the windpipe
Carilage keeps the trachea
open
Lined with mucous and cilia
Bronchi and Lungs
Two branches
Air goes into the bronchi
branches to the bronchiloes
Then air goes to the small
air sacs (alveoli)
Capillaries surround the
alveoli
Oxygen and carbon dioxide
diffuse across the
membrane