3.2.1 Helminths (Cestodes, Diphyllobothrium-Dipylidium-Echinococcus)

Question 1

Longest tapeworm of man

Answer 1

Diphyllobothrium latum

Question 2

Common name for Diphyllobotrium latum?

Answer 2

Broad fish Tapeworm

Question 3

Diphyllobotrium latum is a Pseduophyllidean or Cyclophylidean?

Answer 3

Pseudo

Question 4

Infective stage:

IS to man:
IS to Cyclops/copepods:

a. Cysticeroid
b. Coracidium
c. Pleocercoid
d. Hyatid

Answer 4

IS to man: c
IS to Cyclops/copepods: b

Question 5

Final host for Diphyllobothrium latum

Answer 5

Man

Question 6

1st IH of Hiphyllobotrium latum

Answer 6

Cyclops

Question 7

2nd IH for Diphyllobotrium latum

Answer 7

Fish

Question 8

Pathology D. latum:

Due to _____: sparganosis
Due to adult: Competes for ___________

Answer 8

Larva

Vitamin B12

Question 9

Life cycle of Diphyllobothrium latum:

___________ egg develops into _________ and the procercoid which is ingested by cylops and then ______. This is eaten by man which then develop inside and turns into _________

Answer 9

Operculated, Coracidum, fish, pleocercoid

Question 10

Diphyllobothrium latum remains inside the intestine to get what nutrient?

Answer 10

Vitamin B12

Question 11

Absence of Vitamin B12 causes megaloblastic anemia

T or F

Answer 11

T

Question 12

Dipylidium caninum is the only cestode with ___ (#) genital pore

Answer 12

2

Question 13

Also known as Dog tapeworm, Double pore tapeworm, Cucumber tapeworm

Answer 13

Dipylidium caninum

Question 14

MOT for Dipylidium caninum

Answer 14

Ingestion

Question 15

Dipylidium caninum is Pseduophyllidean or Cyclophylidean?

Answer 15

Cyclophylidean

Question 16

Infective stage for Dipylidium caninum

a. Cysticeroid
b. Coracidium
c. Pleocercoid
d. Hyatid

Answer 16

a

Question 17

Final host for Dipylidium caninum

Answer 17

Dog

Question 18

IH for Dipylidium caninum?

Ctenocephalides canis:____
Ctenocephalides cati:____
Pulex irritans: ____

Answer 18

dog
cat
man

Question 19

Pathology for D. caninum:

Cysticercosis
Hydatid cyst

T or F

Answer 19

T

Question 20

Smallest cestodes that contains small amount of segment

Answer 20

Echinococccus granulosus

Question 21

Echinococcus granulosus is also known as ?

Answer 21

Hydatid worm

Question 22

Echinococcus granulosus only has ___ segments

Answer 22

3

Question 23

MOT for E. granulosus

Answer 23

Ingestion

Question 24

Final host for E. granulosus

Answer 24

Dog

Question 25

IH of E. granulosus

Answer 25

Man, Ox, sheep

Question 26

Best diagnosis for E. granulosus is identification of _________ in tissue

Answer 26

Hydatid cyst

Question 27

Echinococcus granulosus is a Pseduophyllidean or Cyclophylidean?

Answer 27

Cyclophylidean

Question 28

Echinococcus granulosus is also known as?

Answer 28

Hydatid worm

Question 29

Life cycle of Echinococcus Granulosus:

Ingested _________ egg which became ______ embryo. This them migrates to tissue and develop into _______ cyst, blood capsule and scolices

Answer 29

Embryonated, Hexacanth, Hydatid

Question 30

Collectively called hydatid sand

Answer 30

Scolices

Question 31

Egg: Operculated golden yellow

Adult: Scolex is spoon/almond shape with 2 bothria and rostellum

a. Diphyllobothrium latum
b. Dipylidium caninum
c. Echinococcus granulosus

Answer 31

a

Question 32

Eggs same as Taenia

Adult: Scolex with prominent rostellum with double rows of 28-40 hooklets with 4 cup like suckers

a. Diphyllobothrium latum
b. Dipylidium caninum
c. Echinococcus granulosus

Answer 32

c

Question 33

Ova: Melon shaped, enclosed in an egg capsule with 8-15 pockets

Adult: Scolex is globular, armed rostellum with 1-7 circlets of spines with 60-170 segments

a. Diphyllobothrium latum
b. Dipylidium caninum
c. Echinococcus granulosus

Answer 33

b