Chapter 11

3. individual or object from which an infection is acquired
4. a microbe whose relationship with its host is parasitic and results in infection and disease
5. deviation from health that results when cumulative effects of infection damage
6. microbes get past host defense (like skin), enter tissues and multiply
9. long-term of permanent damage to tissues or organs caused by infectious disease
11. proves the baby with the necessary enz5rymes to digest milk
12. the number of people who develop a disease as a specified time, regardless of when it first appeared; takes into account both new and old cases
14. the number of people who develop a disease during a particular time period; indicated the spread of a disease
17. cells that engulf and destroy host pathogens by means of enzymes and antimicrobial chemicals
18. causes clotting of blood or plasma
20. relative severity of a disease caused by a particular microbe
21. habitat in the world from which a pathogen originates; often is a human or animal carrier, but can be nonliving also
22. class of bacterial exotoxin that disrupts the cell membrane of red blood cells
23. study of frequency and distribution of disease and other health-related factors in defined populations

1. capable of causing disease in a healthy persons with normal immune defense
2. the minimum number of microbes necessary to cause an infection
7. organisms coming in from outside the body
8. an organisms potential to cause disease
10. a dormant state of microbes in certain chronic infectious diseases
13. the sum total of all microbes on and in a normal human
15. organisms coming from somewhere within the same human host to cause the infection
16. any characteristic or structure of the microbe that contributes to its ability to establish itself in the host and causes damage
19. digests the protective coating on mucous membranes