Parasitology Flashcards
Pear-shaped
Giardia, Chilomastix, Trichomonas
Shepherdโs crook
Chilomastix mesnili cytostome
Tail of Mansonella streptocerca
Marburg virus
Diarrheal outbreaks
Giardia, Dientamoeba, Cryptosporidium
Malabsoption/steatorrhea
G. lamblia, Capillaria philippinensis
Enterotest (string test)
G. lamblia, S. stercoralis
Undulating membrane
Trichomonas, Trypanosoma (Trypomastigote)
Leishmanial form
Amastigote
Trypanosomal form
Trypomastigote
Xenodiagnosis
Trypanosoma cruzi
Trichinella spiralis
Diagnostic stage of T. brucei
Trypomastigote
Diagnostic stage of T. cruzi
Amastigote (tissue)
Trypomastigote (blood)
Diagnostic stage of Leishmania
Amastigote
Thrown ball (rolling motion) motility
Balantidium coli
Final host of sporozoans
Arthropod vector
Black water fever
Plasmodium falciparum
Black fever
Leishmania donovani
Dum-dum fever
Visceral leishmaniasis
Leishmania donovani
Mucocutaneous leishmaniasis
Leishmania braziliensis
Resistant to P. vivax and P. knowlesi
Fy(a-b-)
Resistant to P. knowlesi merozoites
M-N-
Signet ring
Plasmodium vivax
Serrated or fimbriated infected RBCs
Plasmodium ovale
6-14 average 8 merozoites in schizont
Plasmodium ovale
12-24 average 16 merozoites in schizont
Plasmodium vivax
Rosette/flower-like merozoites
Plasmodium malariae
8-38 average 24 merozoites in schizont
Plasmodium falciparum
Applique forms/accole/marginal, double nuclear dots
Multiple rings
Plasmodium falciparum
Stages seen in peripheral blood in P. falciparum
Ring forms and gametocytes
Older developing stages of P. knowlesi resemble those of
P. malariae (band trophozoites, rosette schizonts)
Early ring stages of P. knowlesi resemble those of
P. falciparum (multiple rings, double nuclear dots, applique form)
Maltese cross (tetrad ring form)
Babesia
Nantucket fever
Babesia microti and Babesia divergens
Texas cattle fever, Red water fever
Babesia
P. falciparum periodicity
every 36H
Malignant tertian malaria
P. ovale/vivax periodicity
every 48H
Benign tertian malaria
P. malariae periodicity
every 72H
Quartan malaria
P. knowlesi periodicity
every 24H
Quotidian malaria
Modified acid fast positive
Oocyst of coccidian
Coccidian oocyst are best examined using
Sheatherโs sugar flotation
Diarrhea in AIDS patient
Cryptosporidium parvum
Autofluorescence positive (UV microscopy)
Cyclospora cayatanensis
Cryptosporidium parvum infective stage
oocyst
Toxoplasma gondii
Definitive host
Accidental intermediate host
Cats
Man
Inhibition test for Toxoplasma gondii
Sabin-Feldman dye test
Ovoviviparous
Strongyloides stercoralis
Enterobius vermicularis
Cephalic chemoreceptors
Amphids
Caudal chemoreceptors
Phasmids
Aphasmids
Trichuris Trichinella Capillaria
Found in the small intestines
โCASHTโ
Capillaria
Ascaris lumbricoides
Strongyloides stercoralis
Hookworms
Trichinella spiralis adult
Largest/longest nematode (overall)
Dracunculus medinensis
Largest intestinal nematode
Ascaris
Filariform larva (L3) as infective stage
Necator, Acylostoma, Strongyloides
Wuchereria, Brugia, and other filarial worms infective stage
Filiform larva (L3)
Soil transmitted helminths
โHATSโ
Hookworms
Ascaris
Trichuris
Strongyloides
Heart-lung migration
โASHโ
Ascaris
Strongyloides
Hookworm
Found in large intestines
โETโ
Enterobius vermicularis
Trichuris trichiura
Trilobate lips/triangular buccal cavity
Ascaris
Double-layered: albuminous and lipoidal
Enterobius vermicularis
Most common helminth to infect man worldwide
Enterobius vermicularis
Most common helminth to infect man in the Ph
Ascaris lumbricoides
Coinfection with Enterobius vermicularis
Dientamoeba fragilis