The pigmented area present in each mammary gland.

Options

A. sweat gland
B. ampulla
C. lactiferous duct
D. areola

Answer

**Step-by-Step Solution:**

1. **Understanding Mammary Glands**: Mammary glands are specialized organs in mammals that produce milk to nourish their young. They are a characteristic feature of the class Mammalia.

2. **Function of Mammary Glands**: The primary function of mammary glands is to provide nutrition to the offspring through the secretion of milk.

3. **Milk Pathway**: Milk produced in the mammary glands is collected in structures known as lactiferous ducts, which lead to the nipple.

4. **Pigmented Area Identification**: The question specifically asks about the pigmented area associated with the mammary glands. In mammals, the area surrounding the nipple is typically pigmented.

5. **Naming the Pigmented Area**: This pigmented area around the nipple is known as the areola. It is important to distinguish this from other structures associated with the mammary glands.

6. **Elimination of Incorrect Options**:
- The term "sweat gland" refers to glands that secrete sweat, not related to mammary glands.
- "Ampula" refers to a part of the mammary duct, not the pigmented area.
- "Lactiferous duct" is a channel for milk, not the pigmented area itself.

7. **Conclusion**: The correct answer to the question is that the pigmented area present in each mammary gland is called the areola.

**Final Answer**: The pigmented area present in each mammary gland is called the areola.

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