Exam 2 Review - Quiz 2 - Taenia sp. Flashcards
The scolex attaches to the intestine. Name the parasite that has the scolex in
a & b.
a: T. saginata
b: T. solium
a) What type of proglottids are these?
b) What is parasite on c?
c) What is parasite on d?
a) gravid
b) Taenia solium
c) Taenia saginata
a) What type of eggs are these?
b) Describe the shape of the eggs
a) Taenia
b) thick outer layer with a prominent radial striations
a) How many cysticerci do you see in image a?
b) If eggs are ingested by humans, that can cause ____.
c) Where are cysticerci found?
a) 4
b) cysticerci
c) muscle tissue
Cysticercus of Taenia solium in the brain may cause symptoms of ____.
epilepsy
What type of body is depicted in images
a
b
c?
a: Immature proglottids being formed in neck region
b: Immature proglottids containing developing reproductive organs.
c: Mature proglottid
What is e?
genital pore
What type of proglottids are found on images a and c?
gravid
How do humans get infected by Taenia sp.?
Ingesting raw or undercooked infected meat
What parasite could the images depict? Why?
T. solium or T. pisiform because the scolex has hooks.
What part of a parasite are the immature proglottids formed?
Neck
Parasite in image “a” is _____.
Parasite in image “c” is ____.
T. saginata; T. solium
What parasite is this?
What body type is it?
Taenia pisiform.
Strobila (body).
What is missing in the Taenia sp. life cycle?
Eggs -> Ingested by ________ -> _____ is released -> oncosphere penetrate intestine -> _____ in muscles -> Ingestion of undercooked meat with cysticerci -> Adults in 2nd host of the intestine -> Eggs
1st Intermediate host (pig, cattle, human, pig); oncosphere; cysterci
What is the life cycle of Taenia?
Eggs -> Ingested by 1st Intermediate host (pig, cattle, human, pig) -> oncosphere is released -> oncosphere penetrate intestine -> oncosphere in muscles -> Ingestion of undercooked meat with cysticerci -> Adults in 2nd host of the intestine -> Eggs
Do images b and d have hooks?
Only image d does.
a) How many suckers in a?
b) Could image b be T. saginata? Why?
a) 4
b) No. T. saginata has no hooks.
What do you see in the images?
Cysticercus of Taenia solium
a) How many extensions are there in c?
c) How many extensions are there in d?
a) 7
b) 17
