Cestodes Flashcards
All is true regarding your Beef tapeworm, except:
I. Quadrate scolex with four suckers and an unarmed
rostellum
II. 1000-4000 segments
III. Lower jejunum
IV. Cysticercus cellulosae
● A. I only
● B. I, II
● C. III only
● D. III, IV
● D. III, IV
Which among the paired cestodes has an incorrect infective
stage?
● A. Beef tapeworm: cysticercus bovis
● B. Pork tapeworm: cysticercus cellulosae
● C. Dog tapeworm: cysticercus larvae
● D. Fish tapeworm: cysticercus larvae
● D. Fish tapeworm: cysticercus larvae (Plerocercoid)
Which does not belong to the morphological characteristics
of your Broad tapeworm.
I. Subglobular scolex
II. Gravid proglottid are rosette-like
III. Two sucking grooves
IV. Bile-stained, brownish with thick striated embryophore
● A. I, II
● B. II, III
● C. II, IV
● D. I, IV
● D. I, IV
There are two main classes of larvae for cestodes. What type of larvae is formed by the enlargement of the central cavity and the production of the scolex at the apex of the invaginated portion as seen in T. solium?
● A. Coenurus
● B. Cysticercoid
● C. Cysticercus
● D. Plerocercoid
● C. Cysticercus
Eggs in packets is a distinct characteristic of this cestode
● A. Hymenolepis nana
● B. Dipylidium caninum
● C. Taenia solium
● D. Diphyllobothrium latum
● B. Dipylidium caninum
Which among the pairs are matched incorrectly?
I. Hymenolepis nana: Subglobular scolex with armed rostellum
II. Hymenolepis diminuta: Subglobular scolex with unarmed rostellum
III. Dipylidium caninum: Scolex with for suckers and an armed rostellum
IV. Taenia solium: Club-shaped scolex with four suckers and a cushion-like rostellum
● A. IV only
● B. I, II
● C. I, II, III
● D. none of the above
● D. none of the above
Smallest / shortest among the choices.
● A. Hydatid cyst tapeworm
● B. Dwarf tapeworm
● C. Pork tapeworm
● D. Rat tapeworm
A. Hydatid cyst tapeworm
Longest cestode among the choices.
● A. Pork tapeworm
● B. Dog tapeworm
● C. Fish tapeworm
● D. Rat tapeworm
C. Fish tapeworm
Oncospheres with pairs of hooklets is a characteristic of
which cestode?
● A. D. caninum
● B. H. diminuta
● C. Taenia spp.
● D. D.latum
C. Taenia spp.
Which parasite creeps out of the anus at night because its
proglottids are capable of moving several inches per hour:
● A. Diphyllobothrium latum
● B. Dipylidium caninum
● C. Echinococcus granulosus
● D. Hymenolepis diminuta
B. Dipylidium caninum
A spatulate-shaped scolex with two suckers at both sides is a characteristic of this cestode
● A. Dog tapeworm
● B. Hydatid cyst tapeworm
● C. Fish tapeworm
● D. Rat tapeworm
C. Fish tapeworm
During the microscopic examination of the fecal specimen, the medical technologist detected and described what seems to be an ova to be having a distinct thick striated embryophore with oncosphere with conspicuous bipolar thickening from which arises 4-8 hair-like polar filaments. What cestode species might this be?
● A. Dog tapeworm
● B. Rat tapeworm
● C. Dwarf tapeworm
● D. Taenia spp.
C. Dwarf tapeworm
Which of the following is not true for your Hydatid cyst
tapeworm
● A. Ova resembles that of Dog tapeworm
● B. Its scolex resembles taeniids
● C. It is the smallest tapeworm
C. It is the smallest tapeworm
Which of the following is not true regarding your
Hymenolepis diminuta
● A. Cysticercus larva is the infective stage
● B. Inhabits the small intestine
● C. Mature proglottids are broader but shorter
● D. Its scolex is subglobular with four suckers and an
unarmed rudimentary rostellum
A. Cysticercus larva is the infective stage
This parasite has pyriform-shaped scolex resembling
taeniids and has four suckers with rostellum armed with 30-60 hooks.
● A. Taenia solium
● B. Hymenolepis nana
● C. Dipylidium caninum
● D. Echinococcus granulosus
D. Echinococcus granulosus
This parasite has a subglobular scolex with four
cup-shaped suckers, a retractable rostellum with a single row
of 20-30 Y-shaped hooklets
● A. Taenia solium
● B. Hymenolepis nana
● C. Dipylidium caninum
● D. Echinococcus granulosus
B. Hymenolepis nana
What must be recovered in a stool sample in order to prove the efficacy of drug therapy for the treatment of Cestodes?
● A. scolex
● B. immature proglottids
● C. gravid proglottids
● D. egg
A. scolex
Diphyllobothrium latum infection is associated to what type of anemia?
● A. Pernicious anemia
● B. Vitamin B6 deficiency anemia
● C. iron deficiency anemia
● D. microcytic, hypochromic anemia
A. Pernicious anemia
Differentiation between Taenia solium and Taenia saginata is best based on which of the following parts?
● A. number of lateral uterine branches
● B. width of proglottids
● C. length of proglottids
● D. morphology of the ova
A. number of lateral uterine branches
Which of the following cestode egg has an inner membrane with two polar thickenings, from each of which rise a 4-8 slender polar filaments?
● A. H.nana
● B. D.caninum
● C. T.solium
● D. H.diminuta
A. H.nana
Which worm has gravid segments that are characterized by an “egg packets” or “pumpkin seed” shaped proglottids and
possesses remarkable motility that migrates actively to the anus?
● A. Dipylidium caninum
● B. Taenia saginata
● C. Hymenolepis nana
● D. Echinostoma ilocanum
● A. Dipylidium caninum
Which of the following correctly describes the scolex of Diphyllobothrium latum?
● A. spatulate scolex with two bothria
● B. spatulate scolex with four suckers and a retractable rostellum
● C. globular scolex with rostellum and single row of
20-30 hooklets
● D. cuboidal scolex without rostellum and has four
suckers
A. spatulate scolex with two bothria
How is D.latum transmitted to man?
A. ingestion of ova
B. ingestion of undercooked fresh water fish infected with plerocercoid larvae
C. ingestion of undercooked fresh water fish infected with corracidium
D. skin penetration of cysticercoid larvae
B. ingestion of undercooked fresh water fish infected with plerocercoid larvae
Which of the following does not release mature ova which
lacks a developed oncosphere?
● A. Diphyllobothrium latum
● B. Taenia saginata
● C. Hymenolepis diminuta
● D. Hymenolepis nana
A. Diphyllobothrium latum
