Malaria Symptoms and Pathophysiology
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Questions and Answers

Which species of Plasmodium is the most pathogenic?

  • P.ovale
  • P.falciparum (correct)
  • P.malariae
  • P.vivax

Which age group is most affected by malaria?

  • Children under 5 (correct)
  • Adults over 40
  • Elderly above 70
  • Teenagers

In which host does the sexual development (sporogony) of malaria parasites occur?

  • Dogs
  • Humans
  • Cats
  • Female Anopheles mosquito (correct)

Which type of schizogony occurs in man (intermediate host)?

<p>Primary exo-erythrocytic schizogony (C)</p> Signup and view all the answers

Which Plasmodium species causes malaria with a relapse every 72 hours?

<p>P. malariae (D)</p> Signup and view all the answers

What type of schizogony involves P. vivax and P. ovale persisting as hypnozoites?

<p>Secondary exo-erythrocytic (B)</p> Signup and view all the answers

Which Plasmodium species can cause periodic relapses for up to 5 years without treatment?

<p>P. vivax (C)</p> Signup and view all the answers

In the mosquito cycle, what process involves the formation of microgametes from microgametocytes?

<p>Exflagellation (D)</p> Signup and view all the answers

Which Plasmodium species has large rings in the trophozoite stage that may adhere to red cells?

<p>P. vivax (A)</p> Signup and view all the answers

What is the characteristic pigment color found in developing trophozoites of P. falciparum?

<p>Black; few clumps (D)</p> Signup and view all the answers

How many merozoites are usually found in mature schizonts of P. malariae?

<p>&lt;12 merozoites (A)</p> Signup and view all the answers

What type of red blood cells do vivax merozoites invade?

<p>Immature red blood cells (reticulocytes) (C)</p> Signup and view all the answers

Where do P.vivax hypnozoites lie dormant?

<p>In the liver (A)</p> Signup and view all the answers

Which medication is typically used to treat malarial attacks caused by P.vivax?

<p>Chloroquine and amodiaquine (C)</p> Signup and view all the answers

When do gametocytes typically appear in relation to asexual parasites?

<p>Before the onset of symptoms (D)</p> Signup and view all the answers

How are antimosquito chemicals like DDT and Malathion helpful in controlling malaria?

<p>Prevent the transmission of malaria by killing mosquitoes (C)</p> Signup and view all the answers

Which of the following is not mentioned as a method for malaria control in the text?

<p>Consuming garlic daily (A)</p> Signup and view all the answers

What is the main cause of anemia in malaria patients?

<p>Destruction of RBCs by parasite and lysis of non-parasitized cells (D)</p> Signup and view all the answers

Which parasite infects the youngest erythrocytes?

<p>P. vivax (C)</p> Signup and view all the answers

What causes blockage of blood capillaries in vital areas like the brain, lung, and kidney in malaria?

<p>Adhesion of infected erythrocytes to blood vessel linings (D)</p> Signup and view all the answers

Which type of malaria is characterized by a lack of synchronized asexual cycles leading to atypical fever patterns?

<p>P. falciparum (A)</p> Signup and view all the answers

How does spleen enlargement occur in malaria?

<p>Massive proliferation of macrophages phagocytosing RBCs (D)</p> Signup and view all the answers

Which type of malaria can lead to life-threatening complications known as pernicious malaria?

<p>P. falciparum (A)</p> Signup and view all the answers

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