How many of the given statements are correct: I. The gut wall has an inner circular and an outer longitudinal muscular layer 11. An oblique muscle layer may be present in the stomach 11. Brunner's glands are submucosal glands in the duodenum IV. Irregular folds of mucosa in stomach are called as rugae V. Crypts of lieberkuhn are seen in intestine VI. The later part of the small intestine is lined with columnar brush bordered epithelium

Options

A. 3
B. 4
C. 5
D. 6

Answer

To determine how many of the given statements are correct, let's analyze each statement one by one:

1. **Statement I**: "The gut wall has an inner circular and an outer longitudinal muscular layer."
- This statement is **correct**. The structure of the gut wall indeed consists of an inner circular layer and an outer longitudinal layer of smooth muscle.

2. **Statement II**: "An oblique muscle layer may be present in the stomach."
- This statement is also **correct**. The stomach has an additional oblique muscle layer, which helps in the churning and mixing of food.

3. **Statement III**: "Brunner's glands are submucosal glands in the duodenum."
- This statement is **correct**. Brunner's glands are located in the submucosa of the duodenum and secrete alkaline mucus to neutralize gastric acid.

4. **Statement IV**: "Irregular folds of mucosa in the stomach are called rugae."
- This statement is **correct**. The folds in the stomach's mucosa are indeed referred to as rugae, which allow for expansion as the stomach fills.

5. **Statement V**: "Crypts of Lieberkühn are seen in the intestine."
- This statement is **correct**. Crypts of Lieberkühn are glandular structures found in the lining of the intestine that aid in secretion and absorption.

6. **Statement VI**: "The later part of the small intestine is lined with columnar brush-bordered epithelium."
- This statement is **correct**. The lining of the small intestine, particularly the jejunum and ileum, features columnar epithelial cells with microvilli, forming a brush border.

Now, let's summarize the findings:

- All six statements (I, II, III, IV, V, and VI) are correct.

**Final Answer**: All 6 statements are correct.