Which of the following indicates the correct flow of milk until the milk is sucked out by infant

Options

A. Alveoli - Cavities of alveoli - Mammary tubules - Mammary duct - Mammary ampulla - Lactiferous duct.
B. Alveoli - Mammary tubules - Cavities of nuclei - Mammary ampulla - Mammary duct - Lactiferous duct
C. Alveoli - Mammary ampulla - Cavities of alveoli - Mammary tubules - Mammary duct - Lactiferous duct
D. Alveoli - Cavity of ampulla - Mammary duct - Mammary tubules - Mammary ampulla - Lactiferous duct.

Answer

To determine the correct flow of milk until it is sucked out by an infant, we can break down the process step by step:

### Step-by-Step Solution:

1. **Milk Production**: The process begins in the **alveoli** of the mammary glands. These are specialized cells that produce milk.

2. **Mammary Tubules**: The milk produced in the alveoli is then transported into the **mammary tubules**. These tubules collect the milk from the alveoli.

3. **Mammary Duct**: The mammary tubules converge to form a larger passage known as the **mammary duct**. This duct serves as a channel for the milk to flow towards the next stage.

4. **Mammary Ampula**: The mammary duct leads to a wider area called the **mammary ampula**. This ampula acts as a storage area for milk before it is released.

5. **Lactiferous Duct**: From the mammary ampula, the milk flows into the **lactiferous duct**. This duct is responsible for transporting the milk to the nipple.

6. **Nipple**: Finally, the lactiferous duct opens at the nipple, which has multiple pores (multi-porous tip) through which the milk is sucked out by the infant.

### Summary of the Flow of Milk:
- **Alveoli** → **Mammary Tubules** → **Mammary Duct** → **Mammary Ampula** → **Lactiferous Duct** → **Nipple**