Parasites

• Endoparasite: parasite living INSIDE the body of a host
• What type of parasite is the most medically important?

  endoparasites
• Give an example of endoparasites?

  hookworms, ascaris, and trichuris
• What are the unholy trinity parasites?

  hookworms, ascaris, and trichuris
• Infection: the presence of endoparasite inside the body
• Ectoparasite: parasite living OUTSIDE the body of a host
• What is an example of ectoparasite?

  arthropods
• Infestation: the presence of ectoparasites outside the body
• Erratic parasite: parasites found in an organ which is not is USUAL habitat
• Give 2 examples of erratic parasites?

  entamoeba histolytica and ascaris lumbricoides
• Obligate parasites: need a host at SOME STAGE of their life cycle to complete their development and to propagate their species.
• Give an example of obligate parasite?

  tapeworms
• Facultative parasite: may exist in FREE-LIVING STATE or may become parasitic when the need arises
• Give an example of facultative parasite?

  strongyloides stercoralis
• Strongyloides stercoralis is also known as what?

  S worm
• Accidental or Incidental Parasite: establishes itself in a hos where it does not ordinarily live
• Give an example of accidental or incidental parasite?

  hymenolepis diminuta
• What is the DEFINITIVE HOST of Hymenolepis diminuta?

  rats
• What is the INTERMEDIATE HOST of Hymenolepis diminuta?

  Insects
• What is the Accidental or Incidental host of hymenolepis diminuta?

  humans
• Permanent parasite: remains on or in the body of the host for its ENTIRE LIFE
• Give an example of permanent parasite?

  Trichnella spiralis
• Trichnella spiralis: parasitizes the muscles
• In what stage of trichnella spiralis is diagnostic stage done?

  larvae
• Trichnella spiralis can be acquired by eating what?

  raw pork
• Temporary parasites: lives on the host only for a short period of time
• Give an example of temporary parasite?

  ectoparasites
• Spurious parasite: is a free-living organism that passes through the DIGESTIVE TRACT without infecting the host
• Give an example of spurious parasite?

  entamoeba coli
• Parthenogenesis: capability of a certain organism of creation of male and female gametes
• female: pointy tail
• male: coil