Function of respiratory system?
Bring oxygen into blood, get rid of carbon dioxide.
Nose
Warms, filters and moistens the air. Sound production and smell.
4 sinuses
maxillary sinuses, frontal sinuses, ethmoid sinuses, sphenoid sinuses
Larynx
Production of speech, protection of airway.
Trachea
C shape to prevent it from collapsing, lies in front of the osophagus.