L39,40: Pathogenic helminths

Question 1

flatworms :

roundworms :

Answer 1

platyhelminths :
- cestodes(tapeworms)
-trematodes(leaf like , flukes)

round worms : nemathelmins /nematodes

Question 2

diphyllobothrium latum is also know as :

Answer 2

the fish tapeworm

Question 3

definitive and intermediate hosts of diphyllobothrium latum:

Answer 3

definitive : man
intermediate : cyclops and fresh water fish

Question 4

site of localization of diphyllobothrium latum:

Answer 4

small intestine

Question 5

which helminth infection is associated with vitamin B12 deficiency and pernicious anemia ?

Answer 5

diphyllobothrium latum

Question 6

echinococcus granulosus is also known as :

Answer 6

dog tapeworm

Question 7

definitive and intermediate hosts of echinococcus granulosus?

Answer 7

definitive host : dogs
intermediate hosts : pigs and occasionally , man

Question 8

what is the infective form of echinococcus granulosus?

Answer 8

eggs

Question 9

most common site of localization of echinococcus granulosus:

Answer 9

liver

Question 10

which helminth is associated with the following scenario :

embryo penetration of intestine of intermediate host and developing into hydatid cyst (jellyfish)

Answer 10

echinococcus granulosus

Question 11

taenia saginata is also known as:

Answer 11

beef tape worm

Question 12

infective form of taenia saginata?

Answer 12

cysticercus bovis (larva)

Question 13

taenia solium is also known as :

Answer 13

pork tapeworm

Question 14

infective form of taenia solium:

Answer 14

cysticercus ceullulosa

Question 15

diseased caused by taenia solium?

Answer 15

digestive disturbances and neurocysticercosis

Question 16

blood flukes are known as :

Answer 16

schistosoma

Question 17

definitive host and intermediate host of trematodes :

Answer 17

definitive host (sexual reproduction ): man
intermediate host (asexual preproduction ): fresh water snails

Question 18

species of schistosoma and what disease they cause :

Answer 18

S. haematobium: urinary schistosomiasis / bilharziasis

S. Mansoni : intestinal bilhariziasis / Schistosomal dysentery

S.japonicum : intestinal and hepatic schistosomiasis

Question 19

enterobius vermicularis is also known as:

Answer 19

pinworm / seat worm

Question 20

infective form of enterobius vermicularis:

Answer 20

embyonated eggs

Question 21

mode of transmission for enterobius vermicularis

Answer 21

ingestion and autoinfection

Question 22

site of localization for enterobius vermicularis

Answer 22

large intestine

Question 23

trichuris trichuris is also known as :

Answer 23

whip worm

Question 24

describe the structure of trichuris trichuris:

Answer 24

barrel shaped with mucus plugs at each end

Question 25

infective form of trichuris trichuris:

Answer 25

mature embryonated eggs

Question 26

site of localization of trichuris trichuris:

Answer 26

large intestine and caecum ( this and enterobius vermicularis are the only omes for large intestine )

Question 27

trichuris trichuris has ____ eggs

Answer 27

bile stained

Question 28

ascaris lumbricoides is also known as :

Answer 28

roundworm

Question 29

clinical implications of ascaris lumbricoides:

Answer 29

larva-Loefflers syndrome

Question 30

ancylostama duodenale is also known as ;

Answer 30

hook worm

Question 31

infective stage of ancylostama duodenale :

Answer 31

3rd stage filariform larva

Question 32

mode of infection of ancylostama duodenale :

Answer 32

penetration into skin

Question 33

Wuchereria bancrofti is also known as:

Answer 33

Filarial worm

Question 34

infective form of Wuchereria bancrofti :

Answer 34

3rd stage larva

Question 35

definitive and intermediate hosts of Wuchereria bancrofti :

Answer 35

definitive host: man

intermediate host:Female Culex, Aedes or Anopheles mosquito

Question 36

mode of transmission of Wuchereria bancrofti:

Answer 36

innoculation / mosquito bite

Question 37

site of localization of Wuchereria bancrofti:

Answer 37

lymph nodes