Respiratory System
Oral Cavity
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Nasal Cavity
Oral Cavity
Pharynx
Epiglottis
Larynx
Trachea
Bronchus
Bronchioles
Alveolar Sacs
Capillary Network
Red Blood Cell
Body Cell
This is the second location where O2 enters the body and also helps with moistening, cleaning, and warming the air that enters.
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Home
Nasal Cavity
Oral Cavity
Pharynx
Epiglottis
Larynx
Trachea
Bronchus
Bronchioles
Alveolar Sacs
Capillary Network
Red Blood Cell
Body Cell