Helminthes

Question 1

All trematodes are hermaphrodite except

Answer 1

Schistosoma
Hematobium- vesical plexus(urine)
Mansoni- inferior
Japonicum- superior mesenteric plexus(stools)

Question 2

Katayama fever is caused by

Answer 2

schistosoma mansoni and japonicum

Question 2

Intermediate host for all trematodes is

Answer 2

Snail

Question 3

Eggs of schistosoma species

Answer 3

Hematobium-oval terminal spine
Mansoni- lateral spine
Japonicum -no spine

Question 4

2nd intermediate host for fasciola hepatica

Answer 4

Fresh water plants- cress, water chestnut, caltrops
Also for fasciolopsis buski

Question 5

Infective form of schistosoma

Answer 5

Cercarie

Question 6

Infective form of fasciola

Answer 6

Metacercarie
Also for all other trematodes except schistosoma (cercarie)

Question 7

Tx for fasciola

Answer 7

Triclabendazole

Question 8

Clonorchis 2nd intermediate host

Answer 8

Fresh water fish

Question 9

Parasite invovlved in pathology of cholangiocarcinoma

Answer 9

Clonorchis

Question 10

Tx for all trematodes except fasciola is

Answer 10

Praziquental

Question 11

All trematodes have operculated eggs except

Answer 11

Schistosoma

Question 12

Intermediate host for diphylobothrium latum

Answer 12

1st cyclops
2nd fresh water fishes

Question 13

Infective form of diphylobothrium

Answer 13

Plerocercoid larva

Question 14

Infective stage of taenia solium

Answer 14

Cysticercus cellulosae

Question 15

Infective stage of taenia saginata

Answer 15

Cysticercus bovis

Question 16

Difference between taenia solium and saginata

Answer 16

Number of Uterine segments in the proglottids on microscopy
7-15
15-30

Question 17

Only tapeworm which needs only one host

Answer 17

Hymenolepis nana( human)

Question 18

Infective stage is filariform larva in

Answer 18

Hookworm and strongyloides
By skin penetration

Question 19

Hymenolepis shows autoinfection?

Answer 19

Both internal and external

Question 20

Longest round worm

Answer 20

Ascaris

Question 21

Smallest round worm

Answer 21

Strongyloides

Question 22

Larva currens is caused by

Answer 22

Strongyloides

Question 23

DOC for strongyloides

Answer 23

Ivermectin

Question 24

Identify _ larve in stools for diagnosis of strongyloides

Answer 24

Rhabditiform

Question 25

Trichuris worms reside in

Answer 25

Large intestine Can cause rectal prolapse, colitis

Question 26

Barrel shaped eggs with bipolar mucus plugs are seen in

Answer 26

Trichuris

Question 27

Enterobius resides in

Answer 27

Large intestine

Question 28

Ascaris and hookworm reside in

Answer 28

Small intestine

Question 29

NIH swab or scotch tape test is used for

Answer 29

Enterobius To show eggs in perianal skin

Question 30

Spread by fomites is seen in

Answer 30

Enterobius Also auto and retro infection

Question 31

Time to collect sample for wuchereria

Answer 31

10pm to 2am Or use Hetrazan provocative test during day

Question 32

No nuclei in tip of tail in microfilaria of

Answer 32

Wuchereria bancrofti

Question 33

2 nuclei in tip of tail

Answer 33

Brugia malayi

Question 34

Onchocera vector

Answer 34

Black fly/simulium

Question 35

Onchocera causes

Answer 35

River blindness Hanging groin Onchoceromata

Question 36

Loa loa has periodicity

Answer 36

Diurnal Produces sheathed microfilaria Causes calabar swellings

Question 37

DOC loa loa

Answer 37

DEC

Question 38

DOC onchocera

Answer 38

Ivermectin