Respiratory System

2. thin, double-walled serous membane that surrounds the lungs
7. the process of continuously moving air in and out of the lungs
8. a highly contagious bacterial infection caused by mycobacterium tuberculosis
10. clusters of lymphatic tissue in the pharynx that function as the first line of defense against infection
13. the process by which the lungs provide oxygen to body tissues and dispose of carbon dioxide; breathing
14. flap of cartilaginous tissue that covers the opening to the trachea

1. the volume of air that never leaves the lungs
2. small openings in the alveolar walls that allow gases and macrophages to travel between the alveoli
3. chemical receptor cells that monitor changes in the pH of the cerebrospinal fluid in effort to regulate carbon dioxide levels and respiration
4. any lung disorder characterized by a long-term airway obstruction, making it difficult to breathe
5. built for gas exchange;surrounds the avlveoli
6. the condition of not having enough oxygen
9. inflammation of the sinuses
11. inflammation of the nasal passges ad pharynx; the common cold
12. the process by which air flows into the lungs; inhalation