INTRODUCTION TO TREAMTODES AND PARAGONIMUS

Question 1

also called flukes
It is dorsoventrally flattened
unsegmented
oval to lancet shape

Answer 1

trematodes

Question 2

All trematodes are dorsoventrally flattened except _________

Answer 2

Schistosoma

Question 3

All trematodes have operculated ova except ___________

Answer 3

schistosoma

Question 4

All trematodes are hermaphroditic except for _________

Answer 4

Schistosoma

Question 5

All trematodes lay embryonated egg except ________

Answer 5

Paragonimus
Echinostoma
Fasciola
Fasciolopsis
Artyfechinostomum

Question 6

_________ have a relatively thick integument, which bear many spines and sensory papillae

Answer 6

parasitic flukes

Question 7

inverted Y shaped and will end blindly

Answer 7

Intestine

Question 8

Digestive system of cestodes

Answer 8

Oral sucker
Pharynx
Intestine

Question 9

paired testes located on the posterior portion of the body

Answer 9

male reproductive system

Question 10

Male reproductive system

Take note if they are:
1.
2.
3.

Answer 10

Globular (round)
Branched (dendritic)
Lobate (lobulated or lobed)

Question 11

single ovary which can be round , lobed, or branched (dendritic)

Answer 11

Female reproductive system

Question 12

found anterior to the paired testes

Answer 12

Female reproductive system

Question 13

All have redia stage except ___________

Answer 13

schistosoma

Question 14

Redia

__________ can produce cercaria or a next amplification generation like redia

Answer 14

sporocyst

Question 15

___________ has features of the adult flukes like the oral and ventral suckers and gut

Answer 15

redia

Question 16

________ is mobile in the snail and prey on sporocst or redia of the same of other species (competition)

Answer 16

redia

Question 17

Classification Based on Habitat

Answer 17

Blood flukes
* Liver flukes
* Intestinal flukes
* Lung fluke
BLIL

Question 18

Description of the diagnostic stage

• Yellowish brown
• Operculated
  Unembryonated
• Thickened posterior end (abopercular end)
• Seen in sputum or stool (if the person is swallowing his sputum)

Answer 18

Sundathelphusa philippina

Question 19

_____________: posterior ends are not thickened

Answer 19

Fasciola/Fasciolopsis/Echinostoma eggs:

Question 20

Paragonimus Adult

The body is elliptic, dorsoventrally it is flattened, _________________
* It looks like half a ______________ shaped
* The ____________ is located in the central position of the body.

Answer 20

reddish-brown in color
peanut or coffee bean
ventral sucker

Question 21

___________ is coffee-bean shape

Answer 21

Adult

Question 22

Pathogenesis
* In the lungs, _____________ provoke granulomatous reaction that leads to the formation of ___________
Within the _______ is blood-tinged purulent materials containing eggs

Answer 22

Paragonimus adult
capsule/cyst
cyst

Question 23

Clinical presentations

• __________ the miss the lungs due to the circuitous route produce extrapulmonary symptoms due to granuloma or cyst or abscess formation

Answer 23

Muscle
Abdominal organs and liver
* Genitals
Brain
Heart
* Lymph nodes

MAGBHL

Question 24

Paragonimus westermani

Cercariae invade the crustacean and encyst into metacercariae.

Life Cycle of

Paragonimus westermani
* Worm traverses the intestinal worm and escapes into the peritoneal cavity

• Wanders around the peritoneal cavity and embeds itself in the abdominal wall for days
• The parasite the returns to the coelom then migrates towards the diaphragm and pleural cavity

65-90 days of development in humans

Answer 24

Paragonimus westermani