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Biology · HUMAN REPRODUCTION

हिन्दी

In the diagrammatic sectional view of the mammary gland, which of the following represents the correct sequence of milk passage from its site of secretion to outside?

  1. Alveoli → Mammary tubule → Mammary duct → Mammary ampulla → Lactiferous duct
  2. Mammary ampulla → Lactiferous duct → Mammary duct → Alveoli
  3. Lactiferous duct → Mammary ampulla → Mammary duct → Alveoli
  4. Alveoli → Lactiferous duct → Mammary ampulla → Mammary duct

Correct answer · Option 1

Alveoli → Mammary tubule → Mammary duct → Mammary ampulla → Lactiferous duct

Explanation

Milk is secreted by the cells of alveoli into its lumen, passes into mammary tubules, which join to form a mammary duct. Several mammary ducts join to form a wider mammary ampulla, connected to lactiferous duct through which milk is sucked out.
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