Cestodes Flashcards
Scolex: spatulate w/ two sucking grooves
PSEUDOPHYLLIDEAN
Scolex: globular w/ 4 muscular suckers
CYCLOPHYLLIDEAN
Ova: operculated and immature
PSEUDOPHYLLIDEAN
Ova: non-operculated and mature
CYCLOPHYLLIDEAN
Embryo: coracidium (ciliated)
PSEUDOPHYLLIDEAN
Embryo: hexacanth or oncosphere
CYCLOPHYLLIDEAN
REQUIRES VERTEBRATE INTERMEDIATE HOST
Taenia solium & Taenia saginata
REQUIRES INVERTEBRATE INTERMEDIATE HOST
Dipyllidium caninum,
Hymenolepis nana,
may or may not require intermediate host
Hymenolepis nana
infects man in the larval stage
Echninococcus granulosus
Phylum platyhelminthes common name
Flatworms
Flatworms scientific name
Phylum platyhelminthes
2 classes of flatworms
Cestoda and Trematoda
Flukes
Trematodes
Cestodes
Tapeworms
Diphyllobothrium latum common name
Fish tapeworm
Fish tapeworm scientific name
Diphyllobothrium latum
size of Diphyllobothrium latum
8-12 meters long
Kosette-shaped uterus
Diphyllobothrium latum
Broader than they are long
Diphyllobothrium latum
Eggs or Ovum of Diphyllobothrium latum
Operculated or immature
1st Intermediate host of Diphyllobothrium latum
Copepod or CYCLOPS
2nd Intermediate host of Diphyllobothrium latum
Fresh water FISH
Disease of Diphyllobothrium latum (adult worm infection)
Diphyllobothriasis
type of anemia in Diphyllobothrium latum
Macrocytic Anemia
Diagnosis of Diphyllobothrium latum
Demo of ova in stool
Number of segments of Taenia saginata
1,000-2,000
Number of segments of Taenia solium
800-1,000
Scolex of Taenia saginata
NO hooks (UNarmed)
Scolex of Taenia solium
Hooks (armed)
Infective stage of Taenia saginata
Cystecercus bovis
Infective stage of Taenia solium
Cystecercus cellulosae
Proglottids: Uterine branches of Taenia saginata
23(14-32)
Proglottids: Uterine branches of Taenia solium
8(7-11)
Passing of Proglottids in Taenia saginata
single and spontaneous
Passing of Proglottids in Taenia solium
APOLYSIS in chain; in groups PASSIVELY
Taenia saginata common name
Beef tapeworm
Beef Tapeworm scientific name
Taenia saginata
Pork Tapeworm scientific name
Taenia solium
Taenia solium common name
Pork Tapeworm
Eggs or Ova of Taenia saginata
Spherical with radial striations
Eggs or Ova of Taenia solium
Spherical with radial striations
Eggs or ova that is NOT infective to man
Taenia saginata
Eggs or ova that is INFECTIVE and may develop into larva
Taenia solium
Diagnosis of Taenia saginata and Taenia solium
MAN
Intermediate host of Taenia saginata
Cattle and Reindeer
Intermediate host of Taenia solium
Pig and Wild boar
Mode of transmission of Taenia saginata
eating of IMPROPERLY COOKED meat
Mode of transmission of Taenia solium
eating of IMPROPERLY COOKED meat
Diagnostic tests: Taeniasis
Stool sample and Scolex examination
Stool sample in Taeniasis should should be repeated how many times?
3
The adult worm for Taenia saginata and Taenia solium is seems to be irritated by what?
Alcohol
NOT a suitable intermediate host for Taenia saginata and Taenia solium
MAN
Hymenolepis nana is also called
Vampirolepis nana
Vampirolepis nana is also called
Hymenolepis nana
Common name of Hymenolepis nana
Dwarf tapeworm
Dwarf Tapeworm scientific name
Hymenolepis nana
Smallest tapeworm
Hymenolepis nana
MOST COMMON tapeworm
Hymenolepis nana
only human tapeworm which CAN COMPLETE ITS ENTIRE LIFE CYCLE IN A SINGLE HOST
Hymenolepis nana
Definitive host of Hymenolepis nana
Man, Rats, and Mice
Intermediate host of Hymenolepis nana
Fleas and Beetles
its neck is LONG AND SLENDER
Hymenolepis nana
Segments: wider than they are large
Hymenolepis nana
Unilateral genital pores
Hymenolepis nana
Y-shaped Hooklets
Hymenolepis nana
Scolex: Armed (retractable) rostellum with 4 cup-shaped suckers
Hymenolepis nana
its Rostellum has a single circle of 20-30 hooks
Hymenolepis nana
2 polar thickenings with 4-8 polar hair-like filaments
Egg of Hymenolepis nana
How many polar hair-like filaments does the egg of the Hymenolepis nana have?
4-8
only cestode that does not require an intermediate host
Hymenolepis nana
Pathogenesis of Hymenolepis nana
Abdominal pain, diarrhea, headache
Detection of egg of Hymenolepis nana in the feces measure between?
30 to 47 microns in diameter
ROUND TO OVAL and should contain 6 hooked oncosphere
Egg of Hymenolepis nana
the egg of Hymenolepis nana should contain of how many hooked oncosphere?
six-hooked
Where does the polar filaments of Hymenolepis nana lie between?
between the egg shell and oncosphere
Intermediate host of Hymenolepis diminuta
Fleas, Beetles, and Cockroaches
2 polar thickenings WITHOUT POLAR FILAMENTS
Egg of Hymenolepis diminuta
Hymenolepis diminuta common name
Rat tapeworm
Rat tapeworm scientific name
Hymenolepis diminuta
Habitat of Hymenolepis diminuta
Small intestine
Most cestodes habitat in human body are in?
Small intestine
Unarmed Rostellum
Hymenolepis diminuta
Bigger than Hymenolepis nana
Hymenolepis diminuta
Eggs: WITHOUT polar filaments
Hymenolepis diminuta
Definitive host of Hymenolepis diminuta
Rats
Diagnosis of Hymenolepis diminuta
Demo of eggs in stool
it requires an Intermediate host
Hymenolepis diminuta
Dipylidium caninum is also called
Cucumber tapeworm
Cucumber tapeworm is also called
Dipylidium caninum
Common name of Dipylidium caninum
DOUBLE-PORED TAPEWORM
Double-pored Tapeworm scientific name
Dipylidium caninum
Intermediate host of Dipylidium caninum
Fleas and beetles
Definitive host of Dipyllidium caninum
Dog and Cat
Infective stage to Definitive host of Dipylidium caninum
Cysticercoid larva
Mode of transmission of Dipylidium caninum
Ingestion of Infected flea
Scolex: rhomboid with 4 suckers and an apical rostellum
Dipylidium caninum
Apical rostellum
Dipylidium caninum
how many rows of spine does the scolex of Dipylidium caninum have?
1 -7 rows of spine
Strobila: 2 sets of reproductive organs
Dipylidium caninum
how many sets of reproductive organs does Dipylidium caninum Strobila have?
2 sets
Gravid segments: PUMPKIN-SEED in appearance
Dipylidium caninum
2 bilateral genital pores with egg packets
Gravid segments of Dipylidium caninum
Intermediate host: Flour beetles
Dipylidium caninum
Intermediate host: Flea (Dog Flea)
Dipylidium caninum
Echinococcus granulosus common name
Hydatid worm
Hydatid worm scientific name
Echinococcus granulosus
SHORTEST CESTODES
Echinococcus granulosus
Incidental host of Echinococcus granulosus
MAN
Intermediate host of Echinococcus granulosus
HERBIVORE: deer, moose, kangaroo, pig, cattle, and goat
Definitive host of Echinococcus granulosus
Dog (and other canine animals)
Eggs: are similar to those of Taenia
Echinococcus granulosus
3 segments of Echinococcus granulosus
Immature, Mature, Gravid
Scolex: pyriform with rostellum with hooks
Echinococcus granulosus
Shape of Ova of Echinococcus granulosus
Subspherical in shape
Color of Ova of Echinococcus granulosus
BROWN STRIATED embryosphere
it resembles Taenia spp. Ova
Ova of Echinococcus granulosus
“Hydatid Cyst”
Larva of Echinococcus granulosus
“Hydatid sand”
Larva of Echinococcus granulosus
TWO LAYERS of larva of Echinococcus granulosus
Outer LAMINATED and Inner GERMINAL layer
How to diagnose a Disease from Echinococcus granulosus?
Biopsy and Ultrasound
What test is not a reliable diagnosis for Echinococcus granulosus Disease?
Fecalysis
Beef tapeworm adult measurement
4-8m
Pork tapeworm adult measurement
3-5m
Dwarf tapeworm adult measurement
10-45mm
Rat tapeworm adult Measurement
20-60cm
Taenia asiatica common name
Asian Tapeworm
Asian tapeworm scientific name
Taenia asiatica
Tapeworm that is commonly found in Thailand, Indonesia, Taiwan, Korea
Taenia asiatica
Taenia asiatica is commonly found in?
Thailand, Indonesia, Taiwan, Korea
Taenia asiatica is found in the liver of?
Pigs, wild boar, or cattle
wart-like protuberance in scolex
Taenia asiatica
Uterine branches: 11-32 (contains vaginal sphincter)
Taenia asiatica
How many is the uterine branches of Taenia asiatica?
11-32
uterine branches of Taenia asiatica contains what?
Vaginal sphincter
Infective stage of Taenia asiatica
Cystecercus
