250 



ANATOMY FOR NURSES [Chap XIII 



Respiration is dependent upon 

 prise the respiratory system, 

 these organs. 



Function 



External 

 nose 



Nose 



Respiratory 

 System 



Larynx 



Internal 



cavities, or ' 

 nasal fossae 



SUMMARY 



the proper functioning of organs that corn- 

 Air passes through the nose or mouth to 



Special organ of the sense of smell. 

 Passageway for entrance of air to the 



respiratory organs. 



Framework of bone (nasal) and cartilage. 



Covered with skin, hned with mucous 



membrane known as pituitary, or 



Schneiderian. 



Xostrils are oval-shaped openings on under 



siu-face, separated by a partition. 

 Extend from nostrils to the pharjTix. 

 Two wedge-shaped ca\'ities. 

 ' 2 palate. 

 2 maxillae. 

 1 ethmoid. 



1 sphenoid. 



2 nasal. 



Formed bv < 



2 turbinated, 

 and pro- 

 cesses of - 

 the eth 

 moid 



Superior 

 meatus. 



Middle 

 meatus. 



Inferior 

 meatus. 



Advantages 

 of nasal 

 breathing 



Communicat- 

 ing sinuses 



JL^ vomer. 



11 bones, 

 r Warmed. 

 Air < ^Moistened. 

 [ Fihered. 



1. Frontal. 



2. Ethmoidal. 



3. Maxillar}' or Antrums of Highmore. 



4. Sphenoidal. 



1. Larj'nx. 3. Bronchi. 



2. Trachea. 4. Lungs. 



Triangular box made up of nine pieces of cartilage. 



Situated between the tongue and trachea. 



Contains vocal cords. 



SUt or opening between cords called glottis, which is pro- 

 tected by leaf-shaped lid called epiglottis. 



Connected with external f Mouth, 

 air by I Nose. 



