Which layer is responsible for the formation of crypts in between the bases of villi in the intestine?

Explanation

To answer the question "Which layer is responsible for the formation of crypts in between the bases of villi in the intestine?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of the Intestine**: The intestine has several layers, including the mucosa, submucosa, muscularis, and serosa. The mucosa is the innermost layer and is responsible for various functions including secretion and absorption.

2. **Identifying Crypts**: Crypts are deep invaginations found between the bases of the villi in the intestinal lining. They are also known as the "crypts of Lieberkühn."

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