Respiratory System

3. volume The volume of air inspired and expired in one breath.
6. The thin, dome-like sheet of muscle that separates the thoracic from the abdominal.
7. The common passage way for both the respiratory system and digestive system.
8. The portion of the trachea that splits into two parts.
10. The trapdoor that covers the larynx when swallowing occurs.
11. a symptom of a upper respiratory infection.
12. This is the action of pushing air out of the lungs.
13. This thin layer of fluid that coats the alveoli.
14. sinus The air filled space located inside the frontal bone.
16. A slow deep breath taken through a wide open mouth.
17. A symptom of a lower respiratory infection.

1. The small well defined area on the medial side of each lung.
2. The smallest portion of the bronchi.
3. The thin, scroll-like bones covered with nasal epithelium.
4. The area between the lungs.
5. The spasmodic contractions of the diaphragm accompanied by sudden closure of the glottis.
9. This is the action of pulling the air into the lungs.
15. This organ is the windpipe.