Cestodes

Question 1

what is the common name for cestodes?

Answer 1

flatworms

Question 2

what are the characteristics of cestodes?

Answer 2

dorse-ventrally flat with bilateral asymmetry

hemaphrodites

does not posses digestive and circulatory system rely on teguments

Question 3

what attributes to the pathogenicity of cestodes?

Answer 3

mechanical obstruction
tissue margination
pyogenic actions
toxic action

Question 4

what are the parts of the cestodes?

Answer 4

scolex
neck
proglottids (strobila)

Question 5

Contains suckers and hooks for attaching to the host

contains the brain

Answer 5

Scolex

Question 6

what is the composition of cyclophyllidea?

Answer 6

rostellum and acetabula

Question 7

what is the composition of pseudophyllidea?

Answer 7

brothria

Question 8

It is where growth occurs

Answer 8

Neck

Question 9

it grows throughout the life of the tapeworm

Answer 9

Proglottid/Strobila

Question 10

the number of strobila varies with what?

Answer 10

size of the worm

age of the host

host-parasite compatibility harmful effects on the host

Question 11

what are the conditions that cause avulsion on strobila

Answer 11

intoxication
starvation
increased persitalsis

Question 12

what parasite is the largest?

Answer 12

Diphyllobothrium latum

Question 13

what is the larva of Taenia solium

Answer 13

cysticercus cellulosae

Question 14

does Taenia saginata have hooks?

Answer 14

no

Question 15

how many gravid proglottids does Taenia solium have

Answer 15

7 to 13

Question 16

what parasite has 2 polar thickenings but no filaments?

Answer 16

Hymenolepsis diminuta

Question 17

how many polar filaments does Hymenolepsis nana have

Answer 17

4 to 8

Question 18

what is the shortest tapeworm

Answer 18

Echinococcus granulosus

Question 19

what are the 3 laboratory diagnosis for Echinococcus granulosus?

Answer 19

exploratory cyst pyncture

roentgenogram (xray)

immunologic test (bentonite flocculation test, casoni intradermal test)

Question 20

what parasite resemble a melon seed in gravid or mature proglottid

Answer 20

Dipyllidium caninum

Question 21

how many proglottids does Taenia solium have

Answer 21

less than 1000

Question 22

what is the pathogenesis of Taenia saginata

Answer 22

obstruction

Question 23

what are the larval stages of pseudophyllidea

Answer 23

Coracidium

Procercoid

Pleurocercoid

Question 24

what are the larval stages of cyclophyllidea

Answer 24

cysticercoid

cysticercus

hydatid

Question 25

the rostellum of pseudophyllidea has hooklets T/F

Answer 25

false

Question 26

what is the infective stage of Diphyllobothrium latum

Answer 26

1st: copepods, 2nd: fresh water fish

Question 27

how many gravid proglottids does Taenia saginata have

Answer 27

15 to 20

Question 28

what is the intermediate host of Taenia saginata

Answer 28

cattle

Question 29

what is the other name of Taenia asiatica

Answer 29

taiwan taenia

Question 30

what is the infective stage of Hymenolepsis nana

Answer 30

egg or cysticercoid larva

Question 31

what is the infective stage of echinococcus granulosus

Answer 31

hydatid cyst

Question 32

how many segments does the shortest tapeworm have?

Answer 32

3

Question 33

what shape is the scolex of diphyllobothrium latum

Answer 33

almond shaped

Question 34

It is the region of cestode growth.

Answer 34

Neck

Question 35

It is also known as the chain of segments.

Answer 35

Strobila

Question 36

What are the three (3) types of segments?

Answer 36

MATURE IMMATURE GRAVID

Question 37

It is the segment full of eggs.

Answer 37

Gravid

Question 38

Cestodes characterized by rostellum with absent hooklets

Answer 38

Pseudophyllidea

Question 39

What is an APOLYTIC strobila?

Answer 39

Gravid proglottids detach to release eggs

Question 40

What is an ANAPOLYTIC strobila?

Answer 40

Gravid proglottids release eggs through the uterine pore

Question 41

What are the larval stages of a true tapeworm?

Answer 41

CYSTICERCOID CYSTICERCUS HYDATID

Question 42

How do cestodes obtain nutrients?

Answer 42

absorption through the teguments

Question 43

It is the largest tapeworm found in man.

Answer 43

Diphyllobothrium latum

Question 44

Typical of a Pseudophyllidea, the hexacanth embryo is sheathed in a ciliated embryophore and is called ____________.

Answer 44

Coracidium

Question 45

What is the infective stage of D. latum?

Answer 45

Plerocercoids

Question 46

What type of anemia can be attributed to D. latum infection?

Answer 46

Vitamin B12 (Cobalamin) Deficiency

Question 47

What is the only known natural definitive host of Taenia spp.?

Answer 47

Humans

Question 48

The armed scolex causes irritation in the intestinal mucosa. | True or False?

Answer 48

True

Question 49

What is the greatest hazard of Taenia spp. to man?

Answer 49

Human cysticercosis

Question 50

This cestode is known as the dwarf tapeworm of mice and human.

Answer 50

Hymenolepis nana

Question 51

Cestode with conical, retractile rostellum with many rows of small spines.

Answer 51

Dipylidium caninum

Question 52

Difference of H. nana and H. diminuta ova?

Answer 52

H. nana – with filaments | H. diminuta – without filaments

Question 53

Infective stage of Hymenolepis diminuta

Answer 53

Cysticercoid larva

Question 54

Infective stage of Echinococcus granulosus

Answer 54

Hydatid cyst

Question 55

Characterized by pumpkin seed appearance of the ova

Answer 55

Dipylidium caninum

Question 56

The asexual process of forming segments.

Answer 56

Strobilation

Question 57

Order of cestode which has operculated egg.

Answer 57

Pseudophyllidean