An introduction to parasites Flashcards Preview

Principles of disease JK > An introduction to parasites > Flashcards

Flashcards in An introduction to parasites Deck (14):
1

3 groups of Parasites

Protozoa, arthropods and helminths

2

Protozoa

Amoeba, malaria and flagellates
Microscopic
Faecal - oral or by a vector

3

Helminths

Roundworm, tapeworm, fluke

4

Arthropod

Lice, tick, mite

5

Malaria

Plasmodium falciparum species in anopheles mosquito
Sporozites injected then mature in liver
Merozites in blood and lyse RBC
Sexual forms taken up by mosquito

6

Amoebic dysentery

Entamoeba histolytica
Trophozite injest RBC and cause bloody diarrhoea with pus
Protozoal cyst in stool and liver abscess

7

Leishamiasis

Cutaneous or muco cutaneous
Kala azar - hepato - splenomegalgy
Spread by sand flies

8

Nematode

Ascaris lumbricoides - ingested eggs hatch in intestine
Travel to lung and are swallowed again
Can see cysts and ova in stool

9

Cestode

Larval cyst in ingested meat

10

Schistomiasis

Miracardia live in snail
Cercaria emerge and travel to lung of human
Schistosome cause fever

11

Helminth infection accompanied by

Eosinophilia
Elevated IgE

12

Definitive diagnosis by

Parasite in tissue or stool and use microscopy

13

Culture for malaria

Thick and thin blood films

14

Serology

Detect antibodies of parasite in deep tissue