Deck 4

Question 1

Exoerythrocytic stage of plasmodium falciparum is located in:

Answer 1

liver

Question 2

Flagellated form of Histomonas meleagridis occurs in:

Answer 2

caeca

Question 3

Endodyogony in Sarcocystis life cycle takes place in:

Answer 3

Tissue cells of intermediate host

Question 4

So called ring worms are stages in the life cycle of:

Answer 4

Plasmodium spp.

Question 5

Sporulation of genus Hepatozoon occurs:

Answer 5

Inside the vector

Question 6

Intermediate host is:

Answer 6

A host in which the parasite passes obligatory through part of its development

Question 7

Tritrichomonas foetus is transmitted by

Answer 7

Infected semen

Question 8

The vector of human Plasmodium is:

Answer 8

Anopheles

Question 9

Visceral leishmaniosis is caused by

Answer 9

Leishmania donovani complex

Question 10

Giardia intestinalis is located:

Answer 10

Extracellularly

Question 11

Eimeria zuernii is located in

Answer 11

Ileum of cattle

Question 12

The nematode Heterakis gallinae plays an important role in life cycle of:

Answer 12

Histomonas meleagridis

Question 13

The infectious stage of eimeriosis is:

Answer 13

Sporulated oocyst with 4 sporocysts in each, with 2 sporozoites

Question 14

Sporogony of Babesia spp. Occurs:

Answer 14

Inside the salivary glands of the final host

Question 15

What is the location of Histomonas meleagridis?

Answer 15

digestive tract, liver and cecum

Question 16

Cryptosporidium- where does sporogony occur (options: inside/outside host)?

Answer 16

inside

Question 17

What is the size of the oocyst of Cryptosporidium?

Answer 17

4 - 6um (5-7)

Question 18

Life cycle of Cryptosporidium

Answer 18

Monoxnous, all 3 phases are endogenous
Schizogony: sporulated oocyst with 4 free sporozoites are ingested by the host à excyst in intestine and release sporozoites that invade the epithelial cells. They multiply asexually by binary fission and they will form the schizont with merozoites inside. The cell rupture and release merozoites that can invade other cells
Gametogony : merozoites enter appropriate cell and develop into gamonts. Female = macrogamont and male = microgamont with flagella. Male microgamonts undergo repeated division and results in a large number of flagellated organism. Microgametes penetrate the macrogamete –> fusion of nucleus–> zygote –> unsporulated oocyst
Sporogony : 2 types of oocyst are formed 80% develop into thick walled. Pass to the environment with feces. 20% develop into thin- walled oocyst and release their sporozoites in the intestine representing the autoinfective life cycle form

Question 19

Texas cattle fever caused by?

Answer 19

Babesia

Question 20

Describe the location of Balatidium coli?

Answer 20

Intestinal tract of arthropods and some vertebrates mainly pigs and humans