Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Look at lifestyle diagrams for human tapeworm and trichinellosis. Indicate stages in the life cycles that could be easily broken to prevent these diseases. 

People eat raw
or undercooked pork
containing cysts of
tapeworm larvae
(cysticerci)
In the intestine,
cysticerci mature
into adults, which
attach themselves
The spheres travel
to muscles and other
organs and develop
into cysts
to the wall of the
intestine
Cysticercosis
in people
Cysticercosis
in pigs
Adult worms
Eggs develop
into spheres, which
invade the wall of
produce segments
that bear eggs
(called proglottids),
which may release
the intestine
eggs or detach
from the tapeworm
Pigs or people
are infected
by ingesting
eggs or the egg-
bearing proglottids
Eggs or the
detached
proglottids
are passed
in stool
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Transcribed Image Text:People eat raw or undercooked pork containing cysts of tapeworm larvae (cysticerci) In the intestine, cysticerci mature into adults, which attach themselves The spheres travel to muscles and other organs and develop into cysts to the wall of the intestine Cysticercosis in people Cysticercosis in pigs Adult worms Eggs develop into spheres, which invade the wall of produce segments that bear eggs (called proglottids), which may release the intestine eggs or detach from the tapeworm Pigs or people are infected by ingesting eggs or the egg- bearing proglottids Eggs or the detached proglottids are passed in stool
Ingestion of
meat scraps
or animals
Ingestion of
undercooked meat
(esp. pork)
Encysted larva in
AAO striated muscle
AA
Pigs
DAA
Carnivorism
Carnivorism
Larva released in
small intestine
2.
Rodents
Encysted larva
in striafed muscle AA6
3.
Adults in
small intestine
Circulation
Infective Stage
A= Diagnostic Stage
4 Larva deposited
in mucosa
expand button
Transcribed Image Text:Ingestion of meat scraps or animals Ingestion of undercooked meat (esp. pork) Encysted larva in AAO striated muscle AA Pigs DAA Carnivorism Carnivorism Larva released in small intestine 2. Rodents Encysted larva in striafed muscle AA6 3. Adults in small intestine Circulation Infective Stage A= Diagnostic Stage 4 Larva deposited in mucosa
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