chapter 19

4. A serious infectious disease caused by Mycobacterium tuberculosis that mainly affects the lungs.
5. A mild upper respiratory infection commonly caused by Rhinovirus.
7. Difficulty or labored breathing, often associated with respiratory infections.
9. Tiny air sacs in the lungs where gas exchange occurs.
10. A protective reflex that clears the airways of irritants, mucus, or pathogens.
12. Infection of the lungs that causes inflammation and fluid buildup in the alveoli, impairing breathing.
13. A contagious respiratory illness caused by the Influenza virus, characterized by fever, cough, and body aches.
15. The primary organs of the respiratory system affected by infectious diseases.
16. Mucus and other material expelled from the lungs during coughing.

1. Also called whooping cough, a highly contagious infection caused by Bordetella pertussis that produces severe coughing fits.
2. White blood cells that defend the body against infection.
3. The airway (windpipe) that connects the larynx to the lungs.
6. Inflammation of the larynx (voice box), often causing hoarseness.
8. Inflammation of the bronchial tubes, usually caused by infection, leading to coughing and mucus production.
11. Fluid accumulation in tissues, including the lungs during severe infections.
12. Inflammation of the throat, often caused by infections such as Streptococcus pyogenes.
14. A chronic inflammatory airway disease that can be triggered or worsened by infections.