...






                        


Malaria life cycle


What are the different stages of the parasite's life cycle?

This small single-cell organism has three to four different forms. Each form is specialised in living in a certain place.

  • The gametocyte is the form that infects the mosquito and reproduces itself, as if it were both sexes. When the mosquito has sucked blood containing gametocytes, these pass into the salivary glands of the mosquito, where they develop into a new form, the sporozoite. The infection can then move on.
  • The sporozoite can be passed on to man when the mosquito bites, injecting its saliva into the tiny blood vessels. The sporozoite travels with the blood to the liver and enters the liver cells. In the liver some of the sporozoites divide (tachysporozoites) and become thousands of merozoites.
  • The merozoites are released from the liver to the blood where they are taken up by the red blood corpuscles. Some of these turn into ring-formed trophozoites that split again to form schizonts.
  • Schizonts burst the red blood corpuscles at a certain moment, releasing the merozoites. This release coincides with the violent rises in temperature during the attacks seen in malaria.
1913

Comentarii :


avatar

Alte materiale :



Cel mai bun fotograf de nunta 


Citeste mai mult la tema:




Однажды твоя жизнь будет оценена не по тому сколько денег ты заработал и сколько у тебя машин. А по тому как ты повлиял на чью-то жизнь...



  
Design by Dr. wikko © 2019