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Concept Dis. Ch 7
Animal Parasites
| Question | Answer |
|---|---|
| individual infected with a disease-producing organism | host |
| simple one-celled animal parasites | protozoa |
| an examples of protozoa is | plasmodium causing malaria |
| complex multi-celled animal parasites | metazoa |
| invertebrate animal w/jointed limbs & segmented body | arthropod |
| insects and spiders are examples of | arthropods |
| worms & flukes are examples of | metazoa |
| crab louse and organism causing scabies are | important arthropods that parasitize humans |
| small intracellular parasites of birds, animals, & humans | Toxoplasma gondi |
| small parasitic worm infecting humans, which lives in lower bowel | pinworm |
| in humans pinworm causes | perianal pruritis |
| parasite of pubic area, which causes intense itching | crab louse |
| particularly dangerous for individuals lacking a spleen | Babesiosis |
| severe amebiasis can cause abscesses in | the liver |
| Trichomonads are a | sexually transmitted parasite |
| Giardia is transmitted | contaminated water |
| to avoid Toxoplasma, pregnant women should not handle | cat feces |
| there is currently no specific treatment for cryptosporidia; it is particularly dangerous for people already infected with | AIDS |
| can be eliminated from water through filtration | Cryptosporidia |
| roundworm that is typically transmitted through undercooked pork is | Trichinella |
| can move from the pulmonary system to the digestive tract | Ascaris worms |
| commonly are located in the intestine | tapeworms |
| Crab louse infestation responds to | anti-parasitics |
| parasitizes intestinal tract and can cause severe diarrhea | Cryptosporidium parvum |
| Cryptosporidium parvum causes | cryptosporidiosis |
| organisms adapted to living within or on body of another host | animal parasites |
| malaria, amoebic dysentery, African sleeping sickness, cryptosporidiosis, toxoplasmosis, giardiasis are all | protozoal infections |
| protozoa release toxins and enzymes that | destroy cells or interfere with their functions |
| caused by various species of Plasmodium | malaria |
| caused by pathogenic ameba, Entamoeba histolytica | Amebic dysentery |
| caused by Trichomonas vaginalis | genital tract trichomonad |
| caused by Giardia lamblia, infects small intestine; crampy abdominal pain | Giardiasis |
| caused by Toxoplasma gondii, may infect fetus of pregnant woman and cause congenital malformations | Toxoplasmosis |
| does not cause disease in immunocompetent persons but causes a severe, sometimes fatal pulmonary infection in persons with HIV/AIDS | Pneumocystis pneumonia, caused by Pneumocystis carinii |
| large roundworm that lives within intestinal tract and eggs discharge in feces | Ascaris |
| Pinworms migrate out of a colon through | the anus while the infected individual is asleep depositing its eggs on the perianal skin |
| humans can become infected with tapeworms by | eating the flesh of an infected animal that contains the larvae of the parasite |
| thick, fleshy, short worms with suckers that attach to the host | flukes |
| flukes that infect the skin | schistosomes |
| small parasite burrows in the superficial layers of the skin, where it lays eggs that hatch in a few days | scabies |
| lives in anal and genital hairs | crab louse |
Created by:
lfrancois
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