Flashcards in Introduction to Parasites Deck (22)
Define a parasite?
- Organisms that live in the expense of another
Give an example of a protozoa
Malaria (plasmodium falciparum)
What are injected under the skin initially by the mosquito?
Where do sporozoites mature?
What do they re enter the circulation as?
What cells do merozoites use to multiply and what do they cause these cells to do?
- Red blood cells
- Destroy them
Once mature, how are these merozoites transmitted to other human?
Mosquito bites infected human
What causes amoebic dysentery?
What is a typical symptom of amoebic dysentery?
Diarrhoea with blood and pus
What can be found in the stool samples of infected individuals with amoebic dysentery?
What is special about leishmaniasis with regards to the pathogen that causes it?
It can be caused by many different parasites
What does cutaneous leishmaniasis cause?
What does visceral leishmaniasis cause?
- Weight loss
What are the three types of helminths?
What's an example of a nematode infection?
How is ascaris lumbricoides contracted?
Ingestion of eggs
What path does ascaris lumbricoides take to mature?
- Embryos hatch and pass through lungs
- Enter stomach and move to small intestine
What does ascaris lumbricoides have the potential to cause?
What is Loefller's syndrome?
Accumulation of eosinophils in the lungs
What is an example of a condition caused by trematodes?
What is the intermediate host of miracidia (immature pathogen of schistosomiasis)
Fresh water snails