UNIT 1 Flashcards
science that deals with organisms living in the human body the host and the medical significance of this host-parasite relationship.
Medical parasitology
a living organism, which takes its nourishment and other needs from a host;
parasite
an organism which supports the parasite.
host
the parasites included in medical parasitology are
protozoa, helminthes, and some
parasites are mainly classified into following two catagories;
Ectoparasite and endoparasite
examples of ectoparasite
lice, ticks, mites
examples of endoparasite
Obligate Parasite
Facultative Parasite
Accidental Parasite
Incidental Parasite
Erratic Parasite
Temporary Parasite
Permanent Parasite
Wandering or Aberrant Parasite
Hyperparasites
Spurious Parasites
Pseudoparasites or artifacts
a parasitic organism that lives on the outer surface of its host,
ectoparsites
parasites that live inside the body of their host,
endoparasites
This parasite is completely dependent on the host during a segment or all of its life cycle,
Obligate Parasite
an organism that exhibits both parasitic and non-parasitic modes of living and hence does not absolutely depend on the parasitic way of life, but is capable of adapting to it if placed on a host.
Facultative Parasite
when a parasite attacks an unnatural host and survives. Larva of Musca domestica in hosts
accidental parasite
parasite found in a host that is not its original host
incidental parasite
one that wanders in to an organ in which it is not usually found.
erratic parasite
are those whose life cycles are not spent entirely on the host and are seen only for certain periods of time
temporary parasites
leads a parasitic life throughout the whole period of its life
permanent parasite
happens to reach a place where it cannot live.
wandering or aberrant parasites
are those that parasitize other parasites
hyperparasites
parasites found transiently in the excretions of the host in view of the host having consumed a parasite of another host
spurious parasite
parasites that resemble a parasite and which are present in the clinical specimens
pseudoparasites or artifacts
