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chapter 20

medical microbiology

baccilli (bacillus) bacteria that has a rod shape
cocci (coccus) bacteria that has a round shape
colony a mass of bacteria growing on a solid culture medium that have arisen from the multiplication of a single bacterium
contagious capable of being transmitted directly or indriectly from one person to another
culture the propagation of a mass of microorganisms in a laboratory culture medium.
culture medium a mixture of neutrients on which microorganisms are grown ina laboratory.
false negative a result denoting that a condition absent when it is actually present.
false positive a result denoting that a condition is present when it is actually absent.
fastidious extremely delicate, difficult to culture, and involving specialized growth requirements
immunization the processes of becoming protected from a disease through vaccination.
incubate in microbiology, the act of placing a culture in a chamber(incubator) that provides optimal growth requirementsfor the multiplication of the organisms,such as the proper temperature, humidity, and darkness.
incubation period the interval time between the invasion by a pathogenic microorganism and the apperance of first symptoms of the disease.
infectous disease a disease caused by a pathogen thta produces harmful effets on its host.
inoculate to introduce microorganisms into a culture medium for growth and multiplication.
microbiology the scientific study of microorganisms and their activity.
mucous membrane a membrane lining body passage or cavities that open to the outside.
normal flora harmless, nonpathogenic microorganisms that normally reside in many parrs of the bodybut do not cause disease.
resistance the natural ability of an organism to remain unaffected by harmful substance in its enviroment.
sequela a morbid (secondary) condition occuring as a result of a less serious primary infection.
smear material spread ona slide for microscope examination.
specimen a small sample or part taken from the body to show that nature of the whole.
spirilla (spirillum) bacteria that have a spiral or curved shape.
streaking the process of inoculating a culture to provide for the growth of colonies on the surface of a solid medium. streaking is done by skimming a wire inoculating loop that contains the specimen across the surface of the medum, using a back and forth maotion.
steptolysin an exotoxin produced by beta-hemolytic streptococci, which completely hemolyzes red blood cells.
susceptible easily affected, lacking resistace.
Created by: sashapalmer