3.2.2 Helminths (Cestodes, Taenia-Hymenolepsis) Flashcards
Common name is Beef tapeworm
Taenia saginata
IH for Taenia saginata
Cattle
Eggs of Taenia saginata is spherical inside with an embryo of _ hooklets(______)
6, Hexacanth
Similar to E. granulosus
All taenia are Cyclophyllidea
T or F
T
Common name is pork tapeworm
Taenia solium
IH of Taenia solium
Pig
Which among the Taenia has
Larva and IS: Cysticercus Cellulosae
Taenia solium
Which among the Taenia has
Larva and IS: Cysticercus bovis
Taenia saginata
Which among the Taenia is irritated by ALCOHOL?
Taenia saginata
This can be seen in feces if irritated by alcohol
People get cysticercosis when they swallow T. solium egg that are passed in the feces of a human with a tapeworm.
T or F
T
Taeniasis is ingestion of?
Larva
Cysticercosis is the ingestion of?
egg
Cysticercosis in the brain
Neurocysticercosis
Common name is Dwarf Tapeworm
Hymenolespsis nana
Smallest cestode infecting human
Hymenolepsis nana
IH of Hymenolepsis nana includes:
Ctenocephalides canis,
Pulex irritans,
Xenopsylla cheopis,
Tenebrio tribolium
T or F
T
Final host for Hymenolepsis nana
Man
Eggs Hymenolepsis nana is ___-shelled with polar thickening with _____ filaments
thin, 6-8
Hymenolepsis nana is mistaken as pinworm
T or F
T
Pinworm: Enterobius vermicularis
Common name Rat tapeworm
Hymenolepsis diminuta
IH of H. diminuta includes:
Rat flea
Cockroaches
Beetle
T or F
T
Final host of H. diminuta?
Man
Eggs of H. diminuta is Nonstriated, with no polar filaments
T or F
F
Striated
Hymenolepsis spp has:
IS: Cysticercoid larva
T or F
T
Scolex: UNARMED rostellum w/ 4 suckers
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
a
Length: 25 meters
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
a
Scolex: Rhomboidal armed rostellum w/ hooks
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
c
Length: 60cm
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
d
Scolex: KNOB-shaped unarmed rostellum
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
d
Length: 25-45 mm, Y-shaped hooklets
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
c
Scolex: ARMED restellum w/ 2 rows of large to small hooklets
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
b
Length: 7 meters
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
b
Gravid proglottids: Tree-like/branching tree
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
a
Gravid proglottids: 7-13 lateral branches
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
b
No. of proglottids: 800-1000
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
d
No. of proglottids: 200
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
c
No. of proglottids: <1k
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
b
No. of proglottids: 1k - 2k
a. Taenia saginata
b. Taenia solium
c. Hymenolepsis nana
d. Hemenolepsis diminuta
a
