Submandibular Gland Sublingual Gland Hard Palate Soft Palate Uvula Fauces Internal Nares Nasopharynx Oropharynx Laryngopharynx Opening of Eustachian Tube Pharyngeal Tonsils Palatine Tonsils Thyroid Cartilage Cricoid Cartilage Epiglottis Superior Nasal Conchae Middle Nasal Conchae Inferior Nasal Conchae Ventricular Folds Vocal Folds

1 1 Epiglottal Cartilage 2 Hyoid Bone 3 4 Thyroid Cartilage Cricoid Cartilage “C-Ring” Tracheal Cartilage Vocal Folds Corniculate Cartilage Arytenoid Cartilage

Thyroid Cartilage Cricoid Cartilage Apex of Lung Pulmonary Vein Pulmonary Artery Bronchiole Pulmonary Lobule Secondary Bronchi Trachea Hyoid Bone Left Primary Bronchi Right Primary Bronchi

1 1 Primary Bronchi Secondary Bronchi Tertiary Bronchi 4 Bronchioles 5 6 Pulmonary Artery Pulmonary Vein 7 8 Esophagus Diaphragm

3 5 6 Tertiary Bronchi Bronchioles Pulmonary Veins Alveoli Pulmonary Arteries Alveolar Capillaries Visceral Pleura

AlveolusAlveolar Capillaries Alveolar Epithelial Cells 1 2 3

Alveolar Capillaries Elastic Fibers Alveolus 1 2 3