All of the following are correct with respect to intestine of human except.

Options

A. Colon having ascending, descending and transverse part.
B. Duodenum is U-shaped structure
C. Taenae & haustra is present all along the length of intestine
D. Highly developed villi is restricted to small intestine

Answer

To solve the question regarding the statements about the human intestine, we will analyze each option provided and determine which statement is incorrect.

### Step-by-Step Solution:

1. **Understanding the Structure of the Large Intestine**:
- The large intestine consists of several parts: the cecum, colon, and rectum.
- The colon itself has three distinct sections: ascending colon, transverse colon, and descending colon.
- **Conclusion**: The statement about the colon having ascending, descending, and transverse parts is **correct**.

2. **Analyzing the Shape of the Duodenum**:
- The duodenum is the first part of the small intestine and is responsible for the initial phase of digestion.
- The shape of the duodenum is often described as "C-shaped" rather than "U-shaped".
- **Conclusion**: The statement claiming the duodenum is a U-shaped structure is **incorrect**.

3. **Presence of Tenae Coli and Haustra**:
- Tenae coli are longitudinal muscle bands found along the length of the large intestine.
- Haustra are the pouches formed by the contraction of the tenae coli, which are also present throughout the large intestine.
- **Conclusion**: The statement regarding Tenae coli and Haustra being present all along the length of the intestine is **correct**.

4. **Presence of Villi in the Intestine**:
- Villi are small, finger-like projections that increase the surface area for absorption and are primarily found in the small intestine.
- They are not present in the large intestine.
- **Conclusion**: The statement that highly developed villi are restricted to the small intestine is **correct**.

### Final Conclusion:
The incorrect statement regarding the human intestine is that the "duodenum is a U-shaped structure." This is false because the duodenum is actually C-shaped.