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Parasitology

Exam 2

QuestionAnswer
Steps of malarial paroxsym asymptomatic incubation period, RBC rupture, 10-15 min chills, 2-6 hour fever, post fever sweating and fatigue, repeat every x hours
What is a thick smear used for detect infection
what is a thin smear used for diagnose species
What is the infective stage in humans for plasmodium species sporozoite
After complete clearing of RBC infection due to hypnozoites Relapse (P. vivax and P. ovale)
Some parasites still left in blood after it was thought to be gone Recrudescence (occurs in all four species)
Species with 48 hour paroxysm length P. ovale and p. vivax
Species with 72 hour paroxysm length P. malariae
Species with 36-48 hour paroxysm length P. Falciparum
What kind of symptoms occur with plasmodium species flu-like
Which plasmodium species is most harmful P. falciparum, brain, kidney and liver frequently involved
Which plasmodium species infects young/immature cells P. vivax and P.ovale
Which plasmodium species infects only mature cells P. malariae
Which plasmodium species infects all ages of cells P. falciparum
What is the vector for the plasmodium species mosquito (spp. Anopheles)
Which species of plasmodium is characterized by a rosette arrangement of merozoites? Plasmodium ovale
Which species of plasmodium is characterized by a band trophozoite? Plasmodium malariae
Which plasmodium species is considered "lively" Plasmodium vivax
Similarities of the miscellaneous parasites obligate intracellular, single-celled, protozoans, non-flagellated, many have oocyst stages
Babesia spp. specimen blood
Isospora belli specimen feces, duodenal contents
Toxoplasma gondii blood (csf)
Cryptosporidium parvum Stool
Microsporidium Serum or cell cultures
Pneumocystis Bronchoalveolar lavage, tracheobronchial aspirate
Sarcocystis spp. Stool
Which species cyst embeds in muscle tissue Sarcocystis
Which species embeds in cardiac muscle tissue Toxoplasma gondii
Which spp. trophs form a maltese cross? Babesia
Commonalities among the trematodes Known as "flukes", complex life cycle, most have mollusk (snail) intermediate host, pass through many life stages (egg, larva, adult worm)
Infects intestine, liver or lungs Organ flukes
infects blood vessels around intestines or bladder Blood flukes
Hermaphrodites Organ flukes
Dioecious (need male and female) Blood flukes
Foodborne Organ flukes
Infect by burrowing through skin blood flukes
2 sporocyst with 4 sporozoites Isospora belli, Sacrocystis
no sporocysts but 4 sporozoites cryptosporidium parvum
Crescent-Shaped forms tachyzoites in toxoplasma gondii
Crescent-shaped forms enclosed in cyst bradyzoites in cyst of toxoplasma gondii
cyst has 4-8 nuclei pneumocystis jiroveci
Schistosoma spp. with prominent large lateral spine mansoni
Schistosoma spp. with small lateral spine japonicum
Schistosoma spp. with large prominent terminal spine haematobium
Which schistosoma spp. is can eggs be found in the urine haematobium
Beef or pork tapeworm Taenia saginata and solium
Rat tapeworm Hymenolepis diminuta
Dwarf tapeworm Hymenolepis nana
Dog or cat tapeworm Dipylidium caninum
Fish tapeworm Diphyllobothrium latum
Hydatid disease Echinococcus granulosus
Causes fatty loose stools Isospora belli