MIC 541-Exam 5-Parisitology 3
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What is a Cyst and what is it's purpose?
- Non-motile form of protozoan
- Cyst well = distinct protective membrane
- Facilitates host to hot transmission
What is excystation?
Emergence of trophozoite from a cyst
What is the term for the emergence of a trophozoite from a host?
What is the cause of amebic dysentary?
what does Entamoeba histolytica cause?
What is the worldwide infection rate of Entameoba hitsolytica?
What groups are most likely to be infected with Entamoeba histolytica?
- immigrants to the U.S.
What percent of people with an infection of Entamoeba histolytica have clinical symptoms?
What medical issues increase the symptoms of Entamoeba histolytica?
- Steroid therapy
What histological characteristics would you expect for Entamoeba histolytica?
- Water expelling vacuoles
- Diameter of about 10-20 um
How is Entamoeba histolytica transmitted?
Fecal oral route
What is the treatment for Entamoeba histolytica?
What would you treat with metronidazole, paromycin and iodoquinol?
What does Entamoeba histolytica look like at the organ level?
- Cause liver abscesses
- Flask shaped ulcers in the colonic mucosa
What parasite causes flask shaped ulcers in the colonic mucosa and liver abscesses?
What type of Parasite is Entamoeba histolytica?
Protozoa - Ameba
What type of parasite is Acanthamoeba Keratitis?
What areas of the body does Acanthamoeba Keratitis infect?
What is a predisposing factor to infection with Acanthamoeba keratitis?
Contact lense wearers 85%
How do you prevent Acanthamoeba keratitis infections?
- Don't wear contact lense in the shower or swimming
- Don't reuse contact lense solutions
- Replace contact lense storage case every 3 months
What would you like to do?
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