Chapter 1 Flashcards
What is a parasite
ecological relationship where 2 organisms, one the parasite the other the host, the parasite is physiologically or metabolically dependent on its host. The host might overall be harmed or could be partially benefited
Which organisms defines the parasite’s niche?
the parasite, it might occupy a specific site and use certain resources that define its niche
What is protein polymorphism
when the host has several forms of the same protein, it is a potential response to parasitism
How do parasites influence micro evolution
They might influence sexual selection.
What is an ectoparasite
lives on the surface of the host
What is an endoparasite
lives inside the host
what is a mesoparasite
penetrates external openings like the mouth, cloaca, external ear
What is considered a definitive host
where the parasite reproduces sexually
What is considered an intermediate host
a host that is required by the parasite to complete its life cycle. Undergoes morphological or physiological change here
What is considered a paratenic host
optional transport, no changes in parasite
What is considered a vector
the host is an active role in transmission, can be definitive or intermediate
What is parenchymatous or albuminous degeneration
tissue damage where cells are swollen packed with albuminous (fatty granules) nuclei become indistinct and the cytoplasm pale, can be seen in infected liver, kidney, muscle and cardiac cells
What is fatty degeneration
tissue damage where there are abnormal amounts of fat in cells, makes them yellow, often in infected liver cells
What is necrosis
tissue damage where cells have died, or tissue is dead. Makes it look opaque.
Define: hyperplasia
increase in body repair that causes inflammation
