INTESTINAL CESTODES

Question 1

part of tapeworm

1. head; hold fast organ
2. budding or growth zone
3. entire chain of proglottids / segments

Answer 1

1. scolex
2. neck
3. strobila

Question 2

3 types of Strobila

1. sexually underdeveloped
2. with complete set of reproductive structures
3. with reproductive structures

Answer 2

1. immature
2. mature
3. Gravid

Question 3

cestode with scolex that is globular with 4 acetabula

Answer 3

CYCLOPHYLLIDEA

Question 4

cestode with scolex that is spatulate with 2 bothria

Answer 4

PSEUDOPHYLLIDEA

Question 5

In intestinal cestodiasis, man harbors the ____________________ and serves as

Answer 5

adult ; definitive host

Question 6

Taenia solium

Common name:

Intermediate Host:

Infective stage:

Answer 6

Common name: pork tapeworm

Intermediate Host: pig

Infective stage: Cysticercus cellulosae

Question 7

Taenia saginata

Common name:

Intermediate Host:

Infective stage:

Answer 7

Common name: beef tapeworm

Intermediate Host: cow/cattle

Infective stage: Cysticercus bovis

Question 8

Hymenolepis nana

Common name:

Intermediate Host:

Infective stage:

Answer 8

Common name: dwarf tapeworm

Intermediate Host: insects (indirect cycle)

Infective stage: Egg (direct) and cysticercoid (indirect)

Question 9

Hymenolepis diminuta

Common name:

Intermediate Host:

Infective stage:

Answer 9

Common name: rat tapeowrm

Intermediate Host: insects (always req)

Infective stage: Cysticercoid

Question 10

Dipylidium caninum

Common name:

Intermediate Host:

Infective stage:

Answer 10

Common name: Dog tapeworm

Intermediate Host: insects (always req)

Infective stage: Cysticercoid

Question 11

Diphyllobothrium latum

Common name:

Intermediate Host:

Infective stage:

Answer 11

Common name: broad fish tapeworm

Intermediate Host: copepods and fish

Infective stage: Plerocercoid

Question 12

longest tapeworm

shortest tapeworm

Answer 12

longest tapeworm D. latum

shortest tapeworm: E. granulosus

Question 13

egg morphology with inner membrane has polar thickenings from which 4-8 polar filaments arise

Answer 13

H. nana

Question 14

Thick striated shell with hexacanth embryo

Answer 14

Taenia spp.

Question 15

Resembles H. nana but lacks polar filaments; with intralaminar layer

Answer 15

H. diminuta

Question 16

8-15 eggs contained in a sac or packet

Answer 16

D. caninum

Question 17

Inconspicuous operculum and small abopercular knob

Answer 17

D. latum

Question 18

Rostellum without hooks?

Rostellum with 7 rows of
thorn-shaped hooks?

Answer 18

Rostellum without hooks? H. diminuta

Rostellum with 7 rows of
thorn-shaped hooks? D. caninum

Question 19

3rd human taenia or Asian or Taiwan Taenia

Answer 19

Taenia asiatica

Question 20

IH of Taenia asiatica

Answer 20

Pig or wild boar

Question 21

Cysticerci of T. asiatica are located primarily in the

Answer 21

LIVER