In 1379, he discovered fasciola hepatica from the sheep.
Jehan de Brie
Anton Van Leewenhoek described the morphology
of the protozoan _________ from his own stool.
giardia lamblia
In 1880, Charles Louis Alphonse Laveran
demonstrated the intracellular parasites of______.
malaria
The best method to attack the problem of parasites.
Prevention.
Therefore, to prevent and to treat parasitic infections, the life cycles of the parasites must be known.
Vectors are?
carriers that spread parasites
What is schistosomiasis?
A disease that is caused by parasites (genus Schistosoma) that enter humans by attaching to the skin, penetrating it, and then migrating through the venous system to the portal veins where the parasites produce eggs.
Parasites could belong to the following group:
bacteria
yeast
fungi
algae
viruses
protozoa
helminths
arthropods
Parasite comes from the greek word para which means ____ and site, _____.
para "near"
site "food"
_______ may be defined as an interspecific association in which one species, the parasite lives on or in a second species the host for a significant period of its life; exploiting the host such as obtaining nourishment, shelter and or protection.
One organism, usually the physically smaller of the two (the parasite) benefits and the other (the host) is harmed.
Symbiosis
Parasitic relationships may be...
temporary, facultative, or obligatory
A parasitic relationship in which an organism that can be parasitic but does not have to live in a host but once incontact to a possible host could react as a parasite.
facultative
A parasitic relationship in which the parasite does not have a choice but to take over a host in order for it to survive.
obligatory
Parasites can be pathogenic or nonpathogenic. True or false
True
In parasitism, there is always exploitation and harm. True or false
True
There are no known cases of species extinction traced to parasitism. True or false
True
Are multicellular parasites that are visible to the naked human eye, such as helminth parasites (parasitic worms, such as flukes, tapeworms,and roundworms, or nematodes)
macroparasites
Are small, generally, unicellular and invisible to the naked eye, such as protozoan parasites.
microparasites
True or false. Only a particular parasite can infect a particular host.
True
What harm can the parasite do to the host?
1.Depriving the host of digestive food.
2.Erecting mechanical blockages of food, blood, lymph and bile passages.
3.Cause tissue damage by rupture , enzymatic digestion, induction of autolysis or secretion of toxins.
