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60 Cards in this Set
- Front
- Back
Define infection |
When pathogenic microorganisms penetrate the host cell |
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Define infectious disease |
The distruptin of a tissue or organ caused by microbes of their product |
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Define resident biota |
The ambndance of microorganisms found in it in the the human body |
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What are locations of resident biota |
Skin, respiratory tract, lungs, external ear canal, vagina |
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Define microbial antagonism |
The effect of beneficial microbes of normal biota |
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Describe endospores infections |
Caused by biota already present in the body |
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What can endospores infections cause |
Pink eye |
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What are factors that weaken the host defenses against infections |
Age, genetic defects, surgery, chemotherapy, stress |
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Describe initial colonoziation of the newborn |
Fetus are seeded with normal microbiota in the utero |
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When does exposure occur in this process |
During the birthing process |
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What are ways you can get this |
Bottle feeding, breast feeding, hospital staff |
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Define opportunistic pathogens |
Cause disease when the host defenses are compromised |
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What is the first stage in the process of infection |
Portals of entry( infectious agent enter the skin) |
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Describe stage one of the process of an infection |
Microbes enter the tissues by a charastic route through the skin, respiratory tract, or GI tract |
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Define exogenous |
Originally from a source outside the body |
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What is the second stage of the infection process |
Adhesion |
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Define adhesion |
Attachment to the host cell |
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What is the third stage in the process of infection |
Surviving the host defenses |
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Define phagocytes |
White blood cell, enguif and destroy pathogen by means of enzyme and antimicrobial chemical |
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What is the fourth step in the process of infection |
Causing disease |
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What are the three main ways that microbes cause damage to hosts |
Secreting proteins that directly damage host cell, by causing an overreaction by the body defenses, by altering the host cell genome |
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Define asymptotic |
The patient experienced no symptoms |
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What is step five of the process of infection |
Vacating the host portals of exit |
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Describe step 5 |
Respiratory and salivery, skin scales, fecal exit, bleeding or removal of blood |
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What are the four phases of infection |
Incubation period, produmal stage, period of invasion, convalescent period |
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Describe the incubation period |
The time from the initial contact with the infectious agent to the appearance of the final symptoms |
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Epidemiology |
The study of frequency of diseases and other health related factors |
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Describe the prodromal stage |
Short period, light symptoms |
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Describe the period of invasion |
Peak activity, the infectious agent multiplies at high levels |
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What is the name of the fifth stage of infection which only sir infections have |
Continuation |
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Define reservoirs |
Primary habitant in the natural world from which a pathogen exist, permanent place to reside |
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Describe living reservoir carrier |
Individual who inconspicuously shelters a pathogen, can spread to others |
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Do convalescent patient have symptoms |
No |
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Define zoonosis |
Infection spread between humans and animals |
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Describe communicable |
Microbe that causes disease can be transmitted from infected host to another host |
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Non communicable |
Cause by weakened immune system |
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Prevelance is the |
total number of cases |
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Incidence is the |
Number of new cases |
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Mortality is the |
Number of death due to cases |
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Define endemic |
Infectious disease that exhibits a relatively steady frequency over a long period of time |
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Define sporadic |
Occasional cases are repeated at irregular latenals |
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Define pandemic |
The spread of an epidemic across continents |
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Name the gi tract diseases caused by microorganisms |
Tooth and gum infections, mumps, salmonella, campylobacter, chorea, giardia, entamoeba, taenia Solium |
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What are the most common infections disease in humans |
Dental or tooth decay |
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What is dental or tooth decay caused by |
Streptocus mutants and streptocus sabrinus |
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Describe pariodontal disease |
Extremely common |
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What is the initial stage of paridontal disease |
Gingivitis |
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What are the symptoms of the mumps |
Fever, nasal discharge, muscle pain, inflammation of salivary glands |
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Vaccine for mumps |
MMR vaccine |
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Describe salmonella |
Not just chicken, raw peanuts |
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Is the salmonella bacteria motile |
Yes |
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Symptoms of salmonella |
Vomiting, diarrhea |
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Describe campylobacter |
Considered the most common bacterial case of diarrhea in the u.s |
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Symptoms of campylobacter |
Watery diarrhea |
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What are the symptoms of chorera |
Vomiting, muscle cramps, watery feces, severe thirst, sunken eyes |
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Treatment for chorera |
Replacement of water and electrolytes |
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Describe giardia |
A pathogenic flagelled protozoan first observed first observed by Antoine van |
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Describe entamoeba |
Tissue damage the annoeba secrets enzymes that dissolve tissue |
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Describe taenia solium |
The pork tapeworm, around 5 meters long, contains a scolex |
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How is taenia solium ingested |
Undercooked meats |