Cestodes

Question 1

[4] The body consist of the following:

Answer 1

1. Scolex
2. Neck
3. Proglottids
4. Strobila

Question 2

[3] Classifications of segments.

Answer 2

1. Immature
2. Mature
3. Gravid

Question 3

[2] Larval forms

Answer 3

1. Solid
2. Bladder

Question 4

[2] Solid larvae

Answer 4

1. Procercoid
2. Plerocercoid

Question 5

Relatively globular with the scolex invaginated into solid body and with cercomere.

[solid larvae]

Answer 5

Procercoid

Question 6

Elongated with the scolex free or may be invaginated into the neck.

[solid larvae]

Answer 6

Plerocercoid

Question 7

[4] Bladder type of larvae

Answer 7

1. Cysticercoid
2. Cysticercus
3. Echinococcus
4. Coenurus

Question 8

w/ small anterior body into which the scolex is invaginated and frequently with a solid and elongated caudal portion.

[bladder]

Answer 8

Cysticercoid

Question 9

w/ a head invaginated into a proximal portion of the large bladder. Contains single scolex only.

[bladder]

Answer 9

Cysticercus

Question 10

w/ germinal epithelium where smaller cyst originate each of which contains small scolices.

[bladder]

Answer 10

Echinococcus

Question 11

w/ germinal epithelium from where the protoscolices arise.

[bladder]

Answer 11

Coenurus

Question 12

Producing passive obstruction, migration to unusual sites and competition with the nourishment of the host.

[stage of development]

Answer 12

Adult stage

Question 13

More likely serious because larvae may be lodged in critical foci such as the brain, eyes or elsewhere and may grow to large masses producing pressure defects on adjacent structures.

[stage of development]

Answer 13

Larval stage

Question 14

Common name of Taenia saginata.

Answer 14

Beef tapeworm

Question 15

Common name of Taenia solium

Answer 15

Pork tapeworm

Question 16

Counting of lateral branches.

Answer 16

India ink

Question 17

India ink: counting of lateral branches.

Answer 17

Taenias’

Question 18

It is found worldwide.

Answer 18

Taenia solium

Question 19

Found primarily in cosmopolitan areas.

Answer 19

Taenia saginata

Question 20

Adult “Taiwan” Taenia resembles adult T. saginata but by the appearance of the cysticercus it is close to T. solium.

Answer 20

Taenia asiatica

Question 21

Common name of Hymenolepis diminuta

Answer 21

Rat tapeworm

Question 22

Protection of foods from rat droppings and from intermediate host insects.

Answer 22

Hymenolepis diminuta

Question 23

Common name of Hymenolepis nana.

Answer 23

Dwarf tapeworm

Question 24

Most common tapeworm recovered in the US.

Answer 24

Hymenolepis nana

Question 25

Found worldwide mainly among children.

Answer 25

Hymenolepis nana

Question 26

Tropical and subtropical climates worldwide.

Answer 26

Hymenolepis nana

Question 27

Common name of Dypilidium Caninum

Answer 27

Double pored tapeworm

Question 28

Recovery of the characteristic egg packets or gravid proglottids in stool sample.

Answer 28

Dipylidium caninum

Question 29

Incidence of this infection is worldwide.

Answer 29

Dipylidium caninum

Question 30

Children appear to be the most at risk for infection transmission.

Answer 30

Dipylidium caninum

Question 31

Dogs and cats should be examined by a veterinarian on a regular basis.

Answer 31

Dipylidium caninum

Question 32

Common name of Diphyllobothrium latum.

Answer 32

Broad fish tapeworm

Question 33

It is in areas that raw and/or freshwater fish are routinely consumed.

Answer 33

Diphyllobothrium latum

Question 34

Common name of Echinococcus Multilocularis and Echinococcus Granulosis.

Answer 34

Dog tapeworm and Hydatid worm