A micro-probe is inserted through the nipple pore to study the internal anatomy of a functional human mammary gland. Arrange the following structures in the correct sequential order as the probe advances from the exterior towards the site of milk production. A. Mammary duct B. Lumen of alveolus C. Mammary ampulla D. Lactiferous duct E. Mammary tubule Choose the correct answer from the options given below:

Step-by-step solution

The pathway of milk secretion from the site of production to the exterior is: Lumen of alveolus Mammary tubule Mammary duct Mammary ampulla Lactiferous duct Exterior. Since the micro-probe is inserted from the exterior (nipple pore) towards the site of milk production, it will traverse these structures in the reverse order. The correct sequential order is: Lactiferous duct (D) Mammary ampulla (C) Mammary duct (A) Mammary tubule (E) Lumen of alveolus (B). Answer: D C A E B