The wolfian duct arises from margin of kidney 

Options

A. posterior, outer
B. anterior, outer
C. posterior, inner
D. anterior, lateral

Answer

To solve the question regarding the origin of the Wolfian duct, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks from which margin of the kidney the Wolfian duct arises. The Wolfian duct is also known as the mesonephric duct.

2. **Identify the Structure of the Kidney**: The kidneys have two main margins: the anterior (or ventral) margin and the posterior (or dorsal) margin.

3. **Locate the Wolfian Duct**: The Wolfian duct arises from the kidney during the development of the urogenital system. It is essential to know where this duct originates from the kidney.

4. **Examine the Positioning of the Kidney**: The kidneys are located in the lumbar region of the body, attached to the vertebral column. The posterior side is the side that faces the back, while the anterior side faces the front.

5. **Determine the Correct Margin**: The Wolfian duct (mesonephric duct) arises from the posterior margin of the kidney. It is important to note that it originates from the outermost layer of the kidney, specifically from the smooth convex surface.

6. **Conclusion**: Based on the anatomical orientation, the Wolfian duct arises from the posterior outer margin of the kidney.

### Final Answer:
The Wolfian duct arises from the **posterior outer margin** of the kidney.