All are true about Brunner’s gland except:
**Core Concept**
Brunner's glands are **duodenal glands** that secrete a mucinous, alkaline substance to protect the duodenal mucosa from acid-pepsin digestion. They are located in the **submucosa** of the duodenum. This secretion helps to neutralize gastric acid.
**Why the Correct Answer is Right**
Since the correct answer is not provided, let's analyze the general function of Brunner's glands. They play a crucial role in protecting the duodenal lining by secreting **bicarbonate** and **mucin**, which helps to neutralize the acidic chyme entering from the stomach. This mechanism is essential for preventing **duodenal ulcers**.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, we cannot directly address why it is incorrect. However, any option stating that Brunner's glands secrete acid or contribute to acidification would be incorrect.
**Option B:** Similarly, without specifics, if option B suggests that Brunner's glands are not involved in the protection of the duodenal mucosa, it would be incorrect.
**Option C:** If option C implies that Brunner's glands are located outside the duodenum or are not part of the duodenal submucosa, it would be incorrect.
**Option D:** Without knowing the content of option D, if it suggests that Brunner's glands are not important for neutralizing stomach acid, it would be incorrect.
**Clinical Pearl / High-Yield Fact**
Remember, Brunner's glands are a key component in the protection of the duodenal mucosa. Their dysfunction or reduction can lead to increased susceptibility to **duodenal ulcers**. Understanding their role is crucial in the context of gastrointestinal health.
**Correct Answer:** Not provided in the query.