A) epidermal layer
B) mesodermal layer
C) mucous layer
D) muscular layer
Correct Answer: A
Solution :
The stomach is protected by the epithelial cells, which produce and secrete a bicarbonate-rich solution that coats the mucosa. Bicarbonate is alkaline, a base, and neutralises the acid secreted by the parietal cells, producing water in the process. This continuous supply of bicarbonate is the main way that your stomach protects itself from auto digestion (the stomach digesting itself) and the overall acidic environment.
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