HYMENOLEPSIS SPECIES

Question 1

What is the common name of H.nana?

Answer 1

Dwarf tapeworm

Question 2

What is the common name of H.diminuta

Answer 2

Rat tapeworm

Question 3

What is the infective host of H.nana?

Answer 3

Fleas

Question 4

Which among the 2 species of Hymenolepsis needs an intermediate host?

Answer 4

Hymenolepsis diminuta

Question 5

What specific fleas is the infective host of H.nana?

Answer 5

Rice and flour beetles (Tenebrio species)

Question 6

What are the intermediate host under the infective host of H.dimunuta?

Answer 6

Beetles
Cockroaches
Rat fleas

Question 7

What is the infective stage of H.nana?

Answer 7

Embronated ova
Cysticercoid larva

Question 8

What is the infective stage of H.dimnuta?

Answer 8

Cysticercoid larva

Question 9

What is the definitive host of hymenolepsis species?

Answer 9

Man and Rats

Question 10

What is the length of an ADULT H.nana?

Answer 10

15 - 50 mm

Question 11

What is the length of an ADULT H. dimunuta?

Answer 11

40 - 60cm

Question 12

What is the scolex of an ADULT H.nana?

Answer 12

Retractable anterior rostellum with 20 - 30 Y shaped hooklets

Question 13

Describe the segment of an H.nana

Answer 13

It has a TERMINAL GRAVID segments

Question 14

What is the location of the genital pore of H.nana?

Answer 14

Same side to proglottids or segmental

Question 15

Describe the scolex of an ADULT H.diminuta

Answer 15

Club-shaped with 4 suckers and unarmed rostellum

Question 16

Describe the PROGLOTTIDS of an ADULT H.diminuta

Answer 16

3 Ovoid testes and 1 ovary

Question 17

What is the location of the genital pore of H.diminuta?

Answer 17

Unilateral

Question 18

Describe the uterus of H.diminuta

Answer 18

Sac-like with eggs

Question 19

What is the diameter of the ova/ovum of H.nana?

Answer 19

45 um

Question 20

How many polar filaments do the ova/ovum of H.nana has?

Answer 20

4-8

Question 21

What is the size of the OVA/OVUM of H.nana?

Answer 21

35 - 55 um

Question 22

Describe the oncosphere of H.nana

Answer 22

6 hooks that is seen as dark lines at 8 o’clock

Question 23

What kind of larva do the H.diminuta have?

Answer 23

Hexacanth larvae

Question 24

Describe the oncosphere of H.diminuta

Answer 24

Enclosed in an inner membrane
Lacks bipolar filaments

Question 25

Describe the hooklets of the ova/ovum of H.diminuta

Answer 25

Fan - like arrangement
Diameter: 60 - 80 um
Bile stained

Question 26

What kind of larva do H.nana have?

Answer 26

Cysticercoid larva

Question 27

Describe the cysticercoid larva of H.nana

Answer 27

Tailed structure with invaginated scolex

Question 28

The cysticercoid of H.nana will soon develop to?

Answer 28

Insect or human villi

Question 29

What is the disease caused by H.nana?

Answer 29

Dwarf tapeworm infection

Question 30

What is the host defense for the direct life cycle of H.nana?

Answer 30

Humoral and cellular response

Question 31

What is the host defense for the indirect life cycle of H.nana?

Answer 31

Induces little or no immunity permitting occasional massive reinfection

Question 32

What is the laboratory diagnosis for H.nana?

Answer 32

Fecalysis, usage of eggs. Specifically Iodine, NSS and KTS

Question 33

What is the specimen used in H.diminuta fecalysis?

Answer 33

Eggs and whole worm

Question 34

What tests should be done for H.diminuta light infections?

Answer 34

Concentration techniques and repeated examinations

Question 35

What do praziquantel do to the tegument of H.nana?

Answer 35

Vacuolization and disruption of tegument at the neck region

Question 36

What is the praziquantel dose that should be given for H.nana and diminuta?

Answer 36

25mg/kg single dose

Question 37

In cestodes what is the reasons why they have strobila?

Answer 37

The neck