Protists Flashcards
1
Q
what are the 6 protozoan parasites that I need to know
A
- giardia
- trichomonas
- toxoplasma
- plasmodium
- amoeba
- cryptosporidium
2
Q
what are the two flagellates
A
giardia and trichomonas
3
Q
what are the three sporozoa
A
toxoplasma, plasmodium, and cryptosporidium
4
Q
giardia features
A
- extracellular parasite
- only attaches and remains localized in small intestine
- mammals (wild animals, dogs, and cats)
5
Q
giardia life cycle
A
biphasic, existing either as an infective cyst or a trophozoite that cannot live in the environment nor cause infection
6
Q
giardia transmission
A
drinking mountain stream water
human or wildlife waste
7
Q
giardia epidemiology
A
fecal-oral route
8
Q
giardia pathogenisis
A
- 1/2 of infected patients are highly symptomatic
- trophozoites attach with disc
- attachment results in inflammation and reducing the gut’s absorptive capability
9
Q
giardia tx
A
metronidizole
10
Q
trichomonas features
A
- resides in human urogenital tract
- both sexes equally, only women are symptomatic causing trichomoniasis
- “twitching motility”
11
Q
trophozoite
A
a growing stage in the life cycle of some sporozoan parasites, when they are absorbing nutrients from the host.
12
Q
trichomonas tx
A
mentronidizole
