parasites Flashcards
Entamoeba histolytica is also nown by?
Montezumas revenge, amoebic dysentery
Where is Montezumas revenge most common to obtain?
Common in Mexico in still water
What does Montezumas Revenge cause?
Bloody diharrea, and sometimes liver abcess
What stages does Entamoeba histolytica have?
Cyst and Trophozoite
How many nuclei does a Entamoeba cyst have?
4 Nuclei and its a perfect circle
How many nuclei does a Entamoeba trophozoite have?
1 nucleus with a circle in the middle (looks like an eye)
What does Giardia intestinalis cause?
Gastroenteritis
What does gastroenteritis do?
It causes malnutrition and dehydration (mal absorbtion)
Where does one aqquire this parasite?
Commonly found in daycare centers and affects hikers and campers through drinking or eating contaminated food and water.
How many stages does Giardia intestinalis have?
Two stages, cyst and trophozoite
What does a Giardia cyst look like?
It is an oblong shape with a mature cyst having 4 nuclei and a immature cyst having 2
What does a Giardia trophozoite have?
It has 2 nuclei towards the rounded portion and one flagella towards the pointed. It has a pear shape
What disease does Trypanosoma cruzi cause?
Chagas disease
How do you aqquire chagas disease
Through the vector known as an assasin bug or kissing bug
What bug is the vector for CHagas disease
triatoma spp
Are humans the definitnive host for chagas disease?
Yes
What stages does cruzi have?
Only a trophozoite stage
What does a cruzi trophozoite look like
it looks like a shrimp mixed with a sea monkey
What disease does trichanomas vaginalis cause?
It causes trichomonaisis, an std
Does trichonomas have a cyst stage?
No it does not, only a trophozoite stage
what does a trophozoite for trichonomas look like?
It looks like a stingray, it has four flagella with one in the back and 4 in the front with one large nucleus seen and a smaller one towards the front
What do cysts undergo to transform to trophozoites in balantidium coli
exystment
what does a balantidium cyst look like
extremley large with a kidneybean shaped nucleus in it
what does a balantidium trophozoite look like
large, cilliated, pear shaped, with a macronucleus and “arrow”
