Parasitology Flashcards
(22 cards)
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
Name the two most common protozoan infections found in the UK
Cryptosporidiosis and Toxoplasmosis
What is the most frequently found protozoan found in human stools
Giardiasis
Name three priority neglected tropical diseases
African Sleeping Sickness, Chagas disease and Leishmaniasis
Name a protozoan infection that is a major cause of cardiac disease in South and Central America
Chagas Disease
What is the more common non-viral STD worldwide
Trichomoniasis
What is the proper name for worms
Helminths
Name the three groups of helminths
Nematodes (round worms), Cestodes (tapeworms) and Trematodes (flukes)
