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30 Cards in this Set
- Front
- Back
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Nonpathogens |
Don't cause disease |
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Pathogenic |
Cause disease |
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Aerobic |
Needs oxygen to grow |
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Anaerobic |
Doesn't need oxygen to grow |
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Bacteria |
Simple, one-celled organisms that multiply rapidly |
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Fungi |
Simple, plant-like organisms that live off dead matter |
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Rickettsiae |
Parasitic, cannot live outside of cell |
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Virus |
Smallest microorganism, can only be seen with electron microscope |
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Helminthes |
Multicellular parasitic organisms |
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Toxins |
Poisons that harm the body |
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Endogenous |
Infection/disease originates inside the body |
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Exogenous |
Infection/disease originates outside the body |
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Nosocomial |
Acquired in a health care facility |
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Opportunistic |
Infections that occur when the body defenses are weak |
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Causative agent |
A pathogen that causes disease |
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Reservoir |
An area where a causative agent can live |
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Fomites |
Objects contaminated with infectious material |
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Portal of exit |
A way for the causative agent to leave |
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Mode of transmission |
Direct contact- Person to person contact or fluids Indirect contact- Transmitted through contaminated objects vectors- insects, rodents & small animals |
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Portal of entry |
A way for the causative agent to enter |
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Body defenses |
Mucous membrane
Cilia Couching and sneezing Hydrochloric acid Tears Inflammation Immune response |
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Susceptible host |
A person more likely to get an infection or disease |
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Asepsis |
The absence of disease producing microorganisms or pathogens
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Sterile |
Free from all organisms, pathogenic and nonpathogenic |
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Contaminated |
Organisms and pathogens are present |
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Antisepsis |
Prevents growth of pathogenic organisms except spores and viruses |
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Disinfection |
Destroys or kills pathogenic organisms |
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Sterilization |
Destroys or kills all organisms, both pathogenic and nonpathogenic |
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What is bioterrorism? |
The use of microorganisms as weapons |
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What are the six characteristics of the "ideal" organism |
Inexpensive and easy to produce Spread through air or indigestion Survives sun, drying and heat Causes death or disability Easily transmitted Difficul |
