MEDICAL
STOMACH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is not a way the stomach protects itself?
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Damaged epithelial cells are quickly replaced
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A thick coat of bicarbonate-rich mucus on the stomach wall
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Epithelial cells joined by desmosomes
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Pepsinogen is not active until HCl is present
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Explanation:
Detailed explanation-1: -Desmosomes and Hemidesmosomes Desmosomes are particularly common in epithelia that need to withstand abrasion (see skin). Desmosomes are also found in cardiac cells, but the intermediate filament in this case is desmin, not keratin (which is found in epithelial cells).
Detailed explanation-2: -Desmosomes are adhesive intercellular junctions that mechanically integrate adjacent cells by coupling adhesive interactions mediated by desmosomal cadherins to the intermediate filament cytoskeletal network.
There is 1 question to complete.