Lecture 41 - Cestodes 1 Flashcards
cestodes are also known as
tapeworms
what is the scolex
holdfast organ
has suckers, retractable or non-retractable rostellum of hooks
what is the neck
germinating region produces “segments”, asexually
what is the strobila
- series of maturing segments or proglottids
- each proglottid is an individual reproductive unit
in the definitive host, cestodes are
adult worms and undergo sexual reproduction
in the intermediate hosts, cestodes are
- larval tapeworms (metacestodes)
- some show asexual reproduction
describe the lifecycle of T. pisiformis
DH: dog small intestines
IH: rabbit mesentery
passed in feces
what is the pathology of T. pisiformis and T. taeniaformis
proglottids on dog poop or butt
describe the life cycle of T. taeniaformis
DH: cat small intestine
IH: rodent mesenteries
passed in feces
how are T. pisiformis and T. taeniaeformis diagnosed
segment squash
how are T. pisiformis and T. taeniaeformis treated
praziquantel
describe the life cycle of T. saginata
DH: human small intestine
IH: cattle muscle
segments passed in feces
describe the life cycle of T. solium
DH: human small intestine
IH: swine muscle
segments passed in feces
T/F: if humans ingest tapeworm eggs from human poop, then there will be larvae in muscles, liver, lungs, and brain
TRUE (called cysticercosis)
describe the life cycle of E. granulosus
DH: canid small intestine
IH: ruminant mesenteries
segments passed in feces
what is the pathology of E. granulosus in intermediate hosts
hydatid cysts in various organs
T/F: E. granulosus is not zoonotic
FALSE
