Protozoa

Question 1

Process of mosquito infection

Answer 1

1 - sporozoites injected by mosquito bite
2 - sporozoites invade hepatocytes
3 - merozoites released and invade RBCs
4 - mature schizont produced
5 - gametocyte produced
6 - diff mosquito bites and is infected, oocyst develops in stomach wall
7 - sporozoites develop in oocyst
8 - oocyst rupture = sporozites migrate to salivary gland of mosquito and cycle restarts

(Plasmodium species exhibit three life-cycle stages—gametocytes, sporozoites, and merozoites. Gametocytes within a mosquito develop into sporozoites. The sporozoites are transmitted via the saliva of a feeding mosquito to the human bloodstream. From there they enter liver parenchyma cells, where they divide and form merozoites. The merozoites are released into the bloodstream and cells of humans)

Question 2

common amoeba

Answer 2

entamoeba histolytica

Question 3

what does entamoeba histolytic cause, route of transmission?

Answer 3

amoebic dysentery, faeco-oral

Question 4

treatment entamoeba histolytica

Answer 4

metrondiazole

Question 5

what type of protozoa is malaria?

Answer 5

coccidia

Question 6

common flagellates (protozoa)?

Answer 6

giardia
trichomona vaginalis
trypanosoma brucei
trypanosoma cruzi

Question 7

what does giardia cause and what is the rx?

Answer 7

causes GI infection = diarrhoea

rx = metrondizole

Question 8

what does trichomona vaginalis cause and what is the rx?

Answer 8

causes vaginal dischange (green and smelly)

rx = metrodiazole

Question 9

what does trypanosoma brucei cause?

Answer 9

causes african sleeping sickness

Question 10

what does trypanosoma cruzi cause and what is the rx?

Answer 10

causes chugs disease

rx = benzidole