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RE-NEET2024Zoology-Mammary Glands

RE-NEET 2024 Zoology Mammary Glands MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Arrange the following parts in human Mammary gland, traversing the route of milk ejection.

A. Mammary duct

B. Lactiferous duct

C. Mammary alveolus

D. Ampulla

E. Mammary tubule Choose the correct answer from the options given below:

A

D → C → E → A → B

B

C → E → B → A → D

C

C → E → A → D → B

D

A → C → E → D → B

Correct Answer

Option C

Detailed Explanation

Chapter: Human Reproduction

Class: 12 Biology — Chapter 3 Topic: Mammary Glands Difficulty: 🟡 Medium

✅ Ans: C → E → A → D → B

Mammary alveolus → Mammary tubule → Mammary duct → Ampulla → Lactiferous duct

🔍 Explanation

  • C. Mammary alveolus: Milk is secreted by the alveolar cells.
  • E. Mammary tubule: Small tubules carry milk away from the alveoli.
  • A. Mammary duct: Tubules join to form mammary ducts.
  • D. Ampulla: Mammary ducts enlarge to form an ampulla, which acts as a temporary milk reservoir.
  • B. Lactiferous duct: The ampulla opens into the lactiferous duct, through which milk is released through the nipple.
Alveolus → Tubule → Duct → Ampulla → Lactiferous duct\boxed{\text{Alveolus → Tubule → Duct → Ampulla → Lactiferous duct}}

📌 NCERT: Each mammary gland consists of 15–20 mammary lobes, and each lobe contains clusters of alveoli. The alveoli open into mammary tubules, which join to form mammary ducts; these expand into ampullae and open into lactiferous ducts.

🧠 NEET Trick: A → T → D → A → L Alveolus → Tubule → Duct → Ampulla → Lactiferous duct.

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