Respiratory System

2. This system works in close connection with the respiratory system
6. The amount of air that remains in the lungs even after a forceful exhale
8. The trachea divides into two primary ______ that enter each lung
9. The nasal cavity is lined with __________ mucosa
11. During this process the size of the thoracic cavity decreases and inspiratory muscles
12. This type of blood enters the lungs
14. Another name for voice box

1. Thin walled air sacs that make up the bulk of lung tissue
3. This is the amount of air that moves into and out of the lungs during normal quiet breathing
4. Reflex or voluntary movements of air (cough, sneeze, hiccups etc.)
5. Using this piece of equipment, a doctor can hear the bronchial sounds and vesicular breathing sounds
7. This gas diffuses into the blood from the lungs
10. The two phases that make up breathing are ______ and expiration
13. This process happens in the alveolus (2 words)