Respiration - p. 465 + 509

Pharynx - p. 510

Larynx - p. 510

Trachea - p. 510

Bronchi (Bronchus) - p. 510

          Bronchioles - p. 510

          Alveoli - p. 510

Epiglottis - p. 480

          Heimlich maneuver - p. 513

Pleural membrane

Diaphragm - p. 511

Intercostal muscles - p. 511

Inspiration - p. 511

Expiration - p. 511

Tidal Volume

Vital Capacity

Respiratory pigments - p. 512

          Hemoglobin - p. 512

                    Heme - p. 512

Atmospheric air

Exhaled air

                                                     
Pathway of Air:



Mouth or nose (hairs act as a filter) ------> Pharynx (shared by digestive 



and respiratory systems) -------> Larynx (contains vocal cords - voice box) -------> 



Trachea (mucus elevator) ------> Bronchi (one bronchus to each lung) -------> 



Bronchioles (million per lung)  ------> Alveoli (clusters of tiny air sacs). 









		   Composition of :



Atmospheric air:	     Exhaled air:



   21% - Oxygen	     16% - Oxygen



    .04% - CO2	     4.4% - CO2



   79% - Nitrogen	      79% - Nitrogen