In human breast , which of the following finally opens at the surface of the nipples ?

Options

A. Mammary tubules
B. Mammary duct
C. Mammary ampulla
D. Lactiferous duct

Answer

To solve the question "In human breast, which of the following finally opens at the surface of the nipples?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Anatomy of the Breast**:
- The human breast contains several structures that are involved in the production and delivery of milk.

2. **Identify Key Structures**:
- The main structures involved in milk delivery are the lactiferous ducts. These ducts are responsible for transporting milk from the mammary glands to the nipple.

3. **Function of Lactiferous Ducts**:
- The lactiferous ducts converge at the nipple and open at the surface, allowing milk to be expelled during breastfeeding.

4. **Confirm the Terminology**:
- The lactiferous ducts are also known as milk ducts or mammary ducts. They play a crucial role in the lactation process.

5. **Select the Correct Answer**:
- Based on the information, the correct answer to the question is that the lactiferous ducts are the structures that finally open at the surface of the nipples.

### Final Answer:
The correct answer is **lactiferous ducts**.

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