108 CHAPTER 4• Respiratory System
Figure 4-1Anterior view of the
upper and lower respiratory tracts.Nasal cavity
NoseLaryngopharynxThyroid cartilageGlottis and vocal cordsLarynxMediastinumParietal pleuraVisceral pleuraRight lungPleural cavityDiaphragm Base of lungNasopharynxAdenoidsOropharynx
Palatine tonsils
EpiglottisTrachea
Right and left
primary bronchiLeft lungBronchioleBronchioleDeoxygenated
blood from heartOxygenated
blood to heartAlveoliPulmonary capillariesApex of lungCO 2AlveolusO 2Exchange of gases between an
alveolus and a pulmonary capillaryPulmonary capillary