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MIC 541-Exam 5-Parisitology 4
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Where is Acanthamoeba keratitis usually found?
Free-living
What are the characteristics of Flagellates?
Single celled
Binary fission
Flagella
Sucking discs near cytostome
Many are non-invasive
What do flagellates use to adhere to surfaces?
Sucking disks near the cytostome
Where can you find Non-invasive flagellates?
Mouth
Vagina
Intestines of vertebrates
How many non-invasive flagellates cause disease?
Only 2
What group do flagellates belong to?
Protozoa
What are the two non-invasive flagellates that cause disease?
Giardia lamblia
Trichanosis vaginalis
What is the infection rate of Giardia Lamblia in developing nations?
25-30%
What is the second most identified parasite in the U.S.?
Giardia lamblia
What group does Giardia lamblia belong to?
Protozoa - flagellates - non-invasive
What percent of U.S. stool samples contain Giardia lamblia?
4%
What is the route of transmission for Giardia lamblia?
Fecal oral route
What form is Giardia lamblia in during transmission?
Resistant cyst
How can you get rid of Giardia lamblia in water?
Filtration or boiling
NOT CHLORINE
Can you rid of Giardia lamblia in water by addition of chlorine?
No
Can you rid of Giardia lamblia in water by boiling or filtration?
Yes
What does intestinal mucosa look like during a Giardia infection?
Villus atrophy
Crypt hyperplasia
What infection would cause intestinal Villus atrophy and crypt hyperplasia?
Giardia lamblia
Describe the pathogenesis of Giardia lamblia?
Cysts ingested
Trophozoites hatch
Attach to intestinal villi
incubation of 10 days causes disease in some
What percent of patients carry Giardia lamblia amsymptomatically?
1/2 to 2/3
How long must Giardia lamblia incubate before it causes clinical disease?
About 10 days
Author
kyleannkelsey
ID
218323
Card Set
MIC 541-Exam 5-Parisitology 4
Description
MIC 541-Exam 5-Parisitology 4
Updated
5/7/2013, 5:43:56 PM
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