Parasitology Flashcards
What is a host
the organism in, or on, which the parasite lives and causes harm”
What is the definitive host
the organism in which the adult or sexually mature stage of
the parasite lives”
What is the intermediate host
the organism in which the parasite lives during a period of
its development only”
What is zoonosis
a parasitic disease in which an animal (non-human vertebrate) is
normally the host - but which also infects man”
What is an endoparasite
a parasite that lives within another living organism”
What is an ectoparasite
“a parasite that lives on the external surface of another living
organism”
What are the two main families of medical parasites
Protozoa (unicellular eukaryotes) and Metazoa (multicellular eukaryotes)
What are the four types of pathogenic protozoa
Amoeba, Flagellates, Ciliates and Apicomplexans (sporozoans)
How does and amoeba move
They extend external projections (pseudopodia) and move the cytoplasm into the pseudopodia
How do amoeba feed
via phagocytosis through the pseudopodia
How do ciliates feed and move?
Through rows of cilia that cover the surface of the organism
Name the only ciliate of human medical importance
Balantidium coli
Name the two important types of flagellates
Metamonads and Trypanosomes
Name two types of metamonad
Giardia and Trichomonas
Name two types of trypanosomes
Trypanosoma and Leishmania
