unit 8 vocab Flashcards
ameba (pl. amebae)
a single-celled eukaryotic organism lacking a definite shape and moving by means
of pseudopodia; also spelled amoeba (pl. amoebae)
arthropod
a member of the phylum Arthropoda, which includes crustaceans, insects, and arachnids
atrial
of or relating to a body cavity
cestode
/ tapeworm; member of the class Cestoda
commensal
/ an organism that lives with, on, or in another organism, without injury to either
congenital
/ acquired during fetal development, and present at the time of birth, but not inherited
cyst
the dormant stage of an organism surrounded by a resistant covering; the nonmotile, nonfeeding stage of
a protozoan parasite; a closed sac-like structure within a tissue
definitive host
the host in which the sexual or adult form of the parasite is found
ectoparasite
/ a parasite that lives on the outer surface of a host
endemic
/ recurring in a specific location or population
endoparasite /
a parasite that lives within the host
helminth
a worm, especially a parasitic worm; in parasitology, the group comprising the roundworms
and flatworms
host
the organism from which a parasite obtains nutrients and in which some or part of the parasite’s life cycle
is completed
immunocompromised
having reduced ability or inability to produce a normal immune response
intermediate host
the host in which the asexual, immature, or larval form of the parasite is found
larva
immature stage of an invertebrate
mechanical vector
a vector (usually an arthropod) that is not essential to a parasite’s life cycle but that can transfer
an infective parasite to a noninfected host
nematode
roundworm; any unsegmented worm of the class Nematoda
opportunistic parasite
an organism that causes disease only in immunocompromised hosts
parasite
/ an organism that lives in or on another species and at the expense of that species
pathogenic /
capable of causing damage or injury to the host