intro to parasitology Flashcards
obligate parasite
entirely dependent
facultative parasite
exhibits both parasitic and non-parasitic modes of living
accidental parasite
not normally associated with host but still infects
where parasite undergoes sexual reproduction
definitive host
location of asexual stages of parasite
intermediate host
chagas disease
protozoan, kissing bug, long term digestive, cardiac, and neurological complication
cystericerosis
tapeworm cyst, seizures
toxocara
round worm, blindness
protist
single celled eukaryote
metazoa/helminth
multicellular worm
sarcodina
amoeba, type of protist, ex. nagleria fowleri, move by extending cytoplamsic projections
mastigophora
flagellates, type of protist, ex. giardia lamblia, move by whipping flagella
ciliophora
ciliates, protist, move by beating cilia, ex. balantidium coli
apicomplexia
protists, obligate intracellular parasite for most of life cycle, ex. toxoplasma
nematodes
roundworms, ex. toxocara
cestodes
tapeworms, ex taenia solium
trematodes
flatworms, schistosoma mansoni
proglotids
segments of tapeworm
baylisacaris
racoon roundworm
pathogensis factors of parasites
size and location, reproductive potential, nutritional requirements, location, immune response
IgM
neutralizes parasites
IgE
activates mast cells and basophils to trigger mediators
Eosinophils
bind IgE to helminth and release toxic chemicals
Macrophages
engulf smaller protists
