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24 terms

Pathogenic Organisms

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pathogen
a microorganism that causes a disease
Microorganism
living organism that is so small it can be seen only w/ the aid of a microscope
bacteria
one-celled microscopic organisms; there are several different types; not all are bad for you
bacilli
rod-shaped, spore-forming bacteria; can cause Tetanus & TB
rickettsia
small bacterium that lives in lice, fleas, ticks and mites; cause: Rocky Mountain Spotted Fever
spirochetes
sprial-shaped bacteria that have flexible walls and can move; causes Lyme Disease
staphylococci
bacteria that form irregular groups or clusters; may cause bacterial pneumonia
streptococci
bacteria that form a singular chain; can cause pharyngitis, aka Strep Throat
fungus
simple parasitic plant; some are harmless; can cause aspergillosis (affects any organ)
yeast
a type of fungus; ex is candida albicans that affects the skin or mucous membranes (common place is mouth and vagina)
parasite
plan or animal that lives on or within another living organism at the expense of that organism; example: malaria
viruses
very small infectious agents that live by invading healthy cells, reproducing and breaking through the cell wall to spread to other cells
varicella
chickenpox; highly contagious viral disease that causes fever and pustules, transmitted by droplets or direct contact w/ the sores
Cytomegalovirus
infection that may not have s/s unless you are pregnant or immunocompromised; can cause blindness, mental disability, etc in newborns
Herpes Zoster
aka shingles; acute viral infection characterized by painful skin eruptions that follow the underlying route of the inflamed nerve; originates w/ the person having chicken pox & reactivated when the immune system is compromised
Infectious Mononucleosis
caused by Epstein-Barr Virus, characterized by fever, sore throat, enlarged lymph nodes; can last for weeks
Measles
acute, highly contagious viral disease transmitted by respiratory droplets; characterized by Koplik's spots, followed by a spreading skin rash
Mumps
viral disease characterized by the swelling of parotid glands
rabies
viral infection that may be transmitted to humans by the blood, tissue, salivary glands of an infected animal
Rubella
aka German Measles; viral infection characterized by fever, diffuse, fine, red rash. If mother has it it may cause congenital abnormalities
antibiotic
chemical substance that stops the growth or kills pathogenic microorganisms
bactericide
substance that causes death of bacteria; primarily penicillins & cephalosporins
bacteriostatic
agent that inhibits, slows, or retard the growth of bacteria; includes tetracyclines, sulfonamides & erythromycin
antiviral drugs
treat viral infections or to provide temporary immunity; acyclovir is an example; antibiotics are not effective against viruses.