Cestodes

Question 1

Cestode that can develop directly in the same host

Answer 1

hymenolepis nana

Question 1

Cestode that can develop directly in the same host

Answer 1

hymenolepis nana

Question 2

excretory organs of cestodes

Answer 2

flame cells / protonephridia

Question 2

excretory organs of cestodes

Answer 2

flame cells / protonephridia

Question 3

Stage ingested by fish

Answer 3

procercoid

Question 3

Stage ingested by fish

Answer 3

procercoid

Question 4

Second larval stage in fish

Answer 4

plerocercoid

Question 4

Second larval stage in fish

Answer 4

plerocercoid

Question 5

Broadly oval, operculated, smooth, golden-yellow ovum

Answer 5

Diphyllobothrium

Question 5

Broadly oval, operculated, smooth, golden-yellow ovum

Answer 5

Diphyllobothrium

Question 6

Scolex has dorsal and ventral slit-like groove

Answer 6

(bothrium)

D. latum

Question 6

Scolex has dorsal and ventral slit-like groove

Answer 6

(bothrium)

D. latum

Question 7

Proglottid with rosette appearance

Answer 7

D. latum (uterus)

Question 7

Proglottid with rosette appearance

Answer 7

D. latum (uterus)

Question 8

Megaloblastic and pernicious anemia

Answer 8

D. latum

Vit B12 deficiency

Question 8

Megaloblastic and pernicious anemia

Answer 8

D. latum

Vit B12 deficiency

Question 9

Causes cysticercosis

Answer 9

Taenia solium

Question 9

Causes cysticercosis

Answer 9

Taenia solium

Question 10

Egg is rounded with radial striations

Answer 10

Taenia sp.

Question 10

Egg is rounded with radial striations and double layer

Answer 10

Taenia sp.

Question 11

Taenia scolex: spheroid, rostellum, with double row of 22-32 hooks

Answer 11

Taenia solium

Question 11

scolex: spheroid, rostellum, with double row of 22-32 hooks

Answer 11

Taenia solium

Question 12

Taenia scolex: cuboid, NO rostellum, NO hooks

Answer 12

T. saginata

Question 12

scolex: cuboid, NO rostellum, NO hooks

Answer 12

T. saginata

Question 13

Taenia proglottid: 20+ uterine branches

Answer 13

T. saginata solium with less

Question 13

proglottid: 20+ uterine branches

Answer 13

T. saginata solium with less

Question 14

Taenia ovary: 2 lobes

Answer 14

T. saginata More uterine branches but less lobes. Solium has 3 ovaries

Question 14

Taenia ovary: 2 lobes

Answer 14

T. saginata More uterine branches but less lobes. Solium has 3 ovaries

Question 15

Dog tapeworm

Answer 15

Echinococcus granulosus aka hydatid worm

Question 15

Dog tapeworm

Answer 15

Echinococcus granulosus aka hydatid worm Dog is definitive host.

Question 16

Ovum of echinococcus:

Answer 16

similar to Taenia

Question 16

Ovum of E. granulosus

Answer 16

similar to Taenia radial striations and double layer

Question 17

scolex: prominent rostellum. double row of 28-40 hooks. 4 cup like suckers

Answer 17

E. granulosus

Question 18

5 segments: | scolex, neck, 3 proglottids

Answer 18

E. granulosus

Question 19

Intermediate hosts of E. granulosus

Answer 19

sheep, pig, cows

Question 20

Infective stage of E. granulosus

Answer 20

egg (ingested)

Question 21

Parasitic stage of E. granulosus

Answer 21

hydatid cyst

Question 22

Diagnosis of E. granulosus

Answer 22

growing cystic tumor on LIVER (hydatid sands which are scolices may be seen and give rise to new cysts) Pulmonary cysts.

Question 23

Smallest cestode

Answer 23

Hymenolepis nana dwarf tapeworm

Question 24

Scolex: rhomboidal, rostellum with single row of hooks, 4 suckers

Answer 24

H. nana

Question 25

Mature segment: One testis and another pair of testes separated by a single ovary

Answer 25

H. nana

Question 26

Ingestion of rat fleas results in indirect life cycle

Answer 26

H. nana

Question 27

Rat tapeworm

Answer 27

H. diminuta

Question 28

Hymenolepis ovum with polar filaments

Answer 28

H. nana H. diminuta with NO polar filaments

Question 29

FLAT scolex, no hooks

Answer 29

H. diminuta

Question 30

DOC for Hymenolepis

Answer 30

niclosamide

Question 31

Egg packets of 8 to 15 eggs

Answer 31

Dipylidium caninum

Question 32

Barrel like proglottids Length > width Over 200 segments

Answer 32

Dipylidium caninum

Question 33

Scolex has 4 rows of hooks, 4 cups, rhomboid

Answer 33

Dipylidium caninum

Question 34

Cysticercoid is infective stage

Answer 34

Dipylidium caninum Eggs (and proglottids) are released from the anus