Match the following items. 1. the two main airways connecting the trachea to the lungs larynx 2. the thin walled airway connecting the pharynx with the bronchi bronchi 3. the back of the nasal cavity and mouth pharynx 4. air sacs within the lungs where the blood gets oxygen and gives up carbon dioxide alveoli 5. the section of the upper respiratory system that contains vocal cords trachea