Upgrade to remove ads
Only $35.99/year

ZOOL 347 Exam #2

Terms in this set (69)

pathogenesis
Capacity of a parasite to cause disease/reduce fitness of a host
immunological memory
Capacity of the vertebrate immune system to respond faster and more effectively to second and subsequent exposure to a specific antigen
immune system
Molecules, cells, and tissues involved in innate and adaptive immunity
constitutive defense
Defense mechanisms that are always present rather than induced by exposure to a parasite. Examples include barriers to the entry of parasites such as the skin or stomach acid in animals
inducible defense
Innate immune processes that are stimulated to occur following infection, as opposed to constitutive defensives such as anatomical barriers, which are always present
pattern recognition receptor
Receptor molecules capable of binding specific pathogen-associated molecular patterns (PAMPs). Once such receptors are bound, induced immune responses are initiated
innate immunity
Various inborn resistance mechanisms that are encountered by a pathogen, before adaptive immunity is induced
adaptive immunity
Immunity to infection conferred by an adaptive immune response
antigens
Portion of a molecule recognized by either antibody or T-cell receptor that stimulates an adaptive immune response
social immunization
Process in certain ants in which ants infected with a fungal pathogen are sought out by uninfected ants, which are subsequently exposed to low levels of infection. This activates immunity to the fungus, preventing a more serious infection
microbiome
Collection of all microorganisms that typically live on or in the body of a host organism
subclinical infection
Infection with a parasite that has no accompanying signs or symptoms of disease
threshold of disease
Minimum number of parasites in a host required to cause detectable signs and symptoms in an infected individual. When parasite numbers are below this threshold value, the infection is subclinical
amebic dysentery
Condition caused by Entamoeba histolytica that occurs when amebas penetrate and feed on the intestinal epithelium of the host and that is characterized by frequent bloody bowel movements
peritonitis
Inflammation of the peritoneal cavity. It can be the result of invasive intestinal parasites, such as Entamoeba histolytica
Sets with similar terms