Milk in mammary glands is stored in

Options

A. reservoir
B. cells of alveoli
C. mammary sacs
D. cavities of alveoli

Answer

To solve the question "Milk in mammary glands is stored in," we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Mammary Glands**:
- Mammary glands are specialized organs in mammals that produce and secrete milk. They consist of various structures that facilitate milk production and storage.

2. **Identifying Key Structures**:
- The mammary glands contain several important structures, including mammary alveoli, mammary ducts, and mammary ampullae.
- Mammary alveoli are the functional units where milk is produced.

3. **Location of Milk Storage**:
- Milk is stored in the cavities associated with the mammary alveoli. These cavities are often referred to as the mammary ampullae, which are bulged structures that help in storing the milk before it is delivered through the ducts.

4. **Analyzing the Options**:
- The options provided are:
- Reservoir
- Silt of alveoli
- Mammary sacs
- Cavities of alveoli
- Among these, "cavities of alveoli" directly refers to the spaces where milk is stored.

5. **Conclusion**:
- Based on the understanding of the mammary gland structure and function, the correct answer to the question is **"cavities of alveoli"**.

### Final Answer:
**Cavities of alveoli**

---