BIOL 1209 Chapter : 20140408 160053
Document Summary
Symbiotic relationships: mutualism- not concerned, commensalism, parasitism, parasite: an organsim that lives in/on another organsim for prolonged period of time-can"t stop here, add: one benefits (the parasite, one is harmed but not killed (usually) Parasitic disease: direct effect: parasite itself, get into body, migrate in tissues, feed off of them, cause harm simply by living in the body. Indirect effect: host defense mechanisms: exacerbate the pathology that the parasite is creating. Innate: does not require prior exposure to specific substance. Inborn- born with this ability: acquired: requires prior exposure to a specific substance/molecule, have to come in contact with the substance and develop defense against it, can be viewed as 3 lines of defense: (first two non-specific) First line- physical barriersto ability of parasite to invade host. Innate- always "on: third line- specific and acquired z(prior exposure required, aka- your immune system.
