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๐จ GI Motility
๐จ 1. Overview of Digestive Processes
๐จ 1.3 Mucosal Defense System
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moitochondria
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Cards (13)
What does GALT stand for?
Gut-associated lymphoid tissue
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What are Peyer's patches?
Organized aggregates of
lymphoid
tissue
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What are the two primary functions of GALT?
Protect against
pathogens
and permit
tolerance
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What types of pathogens does GALT protect against?
Bacteria
,
protozoans
, and
viruses
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Why is immunologic tolerance important in the GI tract?
To tolerate dietary substances and resident
bacteria
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What is significant about the GI tract's area?
Largest area in contact with
pathogens
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Where are 80% of immunoglobulin-producing cells found?
In the
small intestine
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What is the role of nonimmunologic defense?
Protect against
luminal
pathogens
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What are some components of nonimmunologic defense?
Gastric acid
,
mucin
,
peristalsis,
permeability
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What is the effect of impaired small intestinal peristalsis?
Higher levels of
bacteria
in the intestine
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What can result from higher levels of bacteria in the small intestine?
Diarrhea
or
steatorrhea
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What is steatorrhea?
Increased
fecal fat
excretion
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What is the clinical manifestation of impaired intestinal peristalsis called?
Blind loop syndrome
or
stagnant bowel syndrome
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