Figure 13 1 The major respiratory organs shown

Figure 13. 1 The major respiratory organs shown in relation to surrounding structures. © 2015 Pearson Education, Inc.

Figure 13. 1 The major respiratory organs shown in relation to surrounding structures. Nasal cavity Nostril Oral cavity Pharynx Larynx Trachea Right main (primary) bronchus Left lung Right lung Diaphragm © 2015 Pearson Education, Inc.

Figure 13. 2 b Basic anatomy of the upper respiratory tract, sagittal section. © 2015 Pearson Education, Inc.

Figure 13. 2 b Basic anatomy of the upper respiratory tract, sagittal section. Cribriform plate of ethmoid bone Sphenoidal sinus Posterior nasal aperture Nasopharynx • Pharyngeal tonsil • Opening of pharyngotympanic tube • Uvula Oropharynx • Palatine tonsil • Lingual tonsil Laryngopharynx Esophagus Trachea Frontal sinus Nasal cavity • Nasal conchae (superior, middle and inferior) • Nasal meatuses (superior, middle, and inferior) • Nasal vestibule • Nostril Hard palate Soft palate Tongue Hyoid bone Larynx • Epiglottis • Thyroid cartilage • Vocal fold • Cricoid cartilage (b) Detailed anatomy of the upper respiratory tract © 2015 Pearson Education, Inc.

Figure 13. 5 Respiratory zone structures. © 2015 Pearson Education, Inc.

Figure 13. 5 a Respiratory zone structures. Alveolar duct Respiratory bronchioles Terminal bronchiole (a) Diagrammatic view of respiratory bronchioles, alveolar ducts, and alveoli © 2015 Pearson Education, Inc. Alveoli Alveolar duct Alveolar sac