To solve the question regarding the correct sequence of the arrangement of parts in the mammary glands, we will analyze the structure and function of the mammary glands step by step.
### Step-by-Step Solution:
1. **Understanding Mammary Gland Structure**:
- The mammary glands are modified sweat glands that consist of various parts including lobes, ducts, and alveoli. Each breast contains about 15 to 20 glandular lobes.
2. **Identifying Components**:
- The main components of the mammary gland include:
- **Mammary Alveolus**: The site where milk is produced.
- **Mammary Duct**: Tubes that transport milk from the alveoli.
- **Ampulla**: The expanded portion of the duct where milk is stored before it is released.
- **Mammary Lobe**: The larger structure that contains multiple lobules and alveoli.
3. **Sequence of Milk Flow**:
- Milk is produced in the mammary alveoli.
- From the alveoli, milk flows into the mammary ducts.
- The mammary ducts lead to the ampulla, where milk is stored.
- Finally, the milk is released from the ampulla through the lactiferous ducts to the nipple.
4. **Analyzing the Options**:
- **Option A**: Mammary alveolus, Mammary duct, ampulla, and mammary lobe - Incorrect order.
- **Option B**: Ampulla, Mammary lobe, Mammary alveolus, and mammary ducts - Incorrect order.
- **Option C**: Mammary lobes, Mammary ducts, Mammary alveolus, and ampulla - Incorrect order.
- **Option D**: Ampulla, Mammary duct, Mammary alveolus, and mammary lobe - Correct order.
5. **Conclusion**:
- Based on the flow of milk from production to release, the correct sequence of arrangement in the mammary glands is **Option D**: Ampulla, Mammary duct, Mammary alveolus, and Mammary lobe.
### Final Answer:
**The correct sequence is Option D: Ampulla, Mammary duct, Mammary alveolus, and Mammary lobe.**
