Answer is . The pharynx is located behind the nasal cavities. It extends down to the larynx. The pharynx is very important because it is the only passage from the mouth and ...Bronchus, Windpipe. Bronchi is the plural form of bronchus. One of the large air passages in the lungs. Bronchioles, Little windpipe.Alveoli is the plural form of alveolus. Alveolus also means little hollow. Bronchus, Windpipe. Bronchi is the plural form of bronchus.Bronchioles, Little windpipe. Airways that extend from the bronchi. Diaphragm, A dome-shaped muscle that separates the thoracic cavity and the abdominal ...Pleura, Pleurae is the plural form of pleura. ; A serous membrane that encompasses the lungs. ; Pulmonary, Pertaining to the lungs and respiratory system.