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Mucus secreted by the goblet cells, comb...

Mucus secreted by the goblet cells, combined with bicarbonates maintains the alkaline medium of the intestine. The source of bicarbonates is :

A

Intestinal mucosa

B

Gall bladdar

C

Pancreas

D

Brunner's glands

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The correct Answer is:
To solve the question regarding the source of bicarbonate that maintains the alkaline medium of the intestine, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Role of Mucus and Bicarbonate**: - Mucus secreted by goblet cells plays a crucial role in protecting the intestinal lining and facilitating digestion. Bicarbonate helps to neutralize the acidic contents coming from the stomach, creating an alkaline environment in the intestine. 2. **Evaluating the Options**: - **Option A: Intestinal Mucosa**: This is primarily a barrier and does produce mucus, but it is not a direct source of bicarbonate. - **Option B: Gallbladder**: The gallbladder stores bile, which aids in the digestion of fats, but it does not produce bicarbonate. - **Option C: Pancreas**: The pancreas secretes bicarbonate into the small intestine to neutralize stomach acid, making it the correct source of bicarbonate. - **Option D: Brunner Glands**: These glands secrete alkaline mucus to protect the intestinal wall but are not the primary source of bicarbonate. 3. **Conclusion**: - After analyzing the options, the pancreas is identified as the correct source of bicarbonate that maintains the alkaline medium of the intestine. ### Final Answer: The source of bicarbonate is **Option C: Pancreas**.
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