Protozoa/Helminths — Flashcards

Flashcard 241: The trophozoites of Plasmodium _____ are small rings

Answer: falciparum

Flashcard 242: Which subspecies of Trypanosoma brucei is from West Africa?_____

Answer: Trypanosoma brucei gambiense

Flashcard 243: Which stain is used to visualize Trypanosomes?_____

Answer: Giemsa

Flashcard 244: How is Babesiosis (Babesia spp.) transmitted?_____

Answer: Ixodes tick

Flashcard 245: Cryptosporidium is highly resistant to chlorination, therefore _____ is used to remove the parasite from water

Answer: filtration

Flashcard 246: What are the two major species of human hookworms?

Answer: Ancylostoma duodenale and Necator americanus

Extra: Necator americanus (New World hookworm) is endemic to the Americas (including the Southern US). Ancylostoma duodenale (Old World hookworm) is found in the Eastern Hemisphere (Europe, Middle East, North Africa). Both cause intestinal infection and iron deficiency anemia.

Flashcard 247: What are the intermediate hosts of Paragonimus westermani?

Answer: 1st: Snails 2nd: Crustaceans (crabs or crayfish)

Flashcard 248: What is the host of Leishmania braziliensis?_____

Answer: Vertebrates

Flashcard 249: Trichinella spiralis is a helminth commonly found in _____ (food)

Answer: undercooked meat (ie: pork)

Flashcard 250: Hypnozoites of Plasmodium vivax and ovale are found in _____

Answer: hepatocytes