Mammary tubules of each mammary lobe are joined to form

Options

A. Mammary duct
B. Lactiferous duct
C. Mammary ampulla
D. Lumen of alveoli

Answer

**Step-by-Step Solution:**

1. **Understanding Mammary Glands**: Mammary glands are paired structures present in female mammals, responsible for milk production to nourish their young ones.

2. **Structure of Mammary Glands**: Each mammary gland consists of 15 to 20 mammary lobes. These lobes contain clusters of cells called alveoli, which are responsible for producing milk.

3. **Pathway of Milk Production**: Once milk is produced in the alveoli, it is transported through a series of structures. The first structure that the milk enters after being produced is the mammary tubules.

4. **Formation of Mammary Ducts**: The mammary tubules from each mammary lobe converge and join together to form mammary ducts. This is a crucial step in the pathway of milk transport.

5. **Further Pathway**: After the mammary ducts, the milk travels to the mammary ampulla, and then into the lactiferous duct, from where it can be expelled.

6. **Conclusion**: The question specifically asks what the mammary tubules of each mammary lobe join to form. Based on the pathway described, the correct answer is that they join to form the mammary duct.

**Final Answer**: The mammary tubules of each mammary lobe are joined to form the mammary duct.

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