The glandular tissue of each breast is divided into 15-20 mammary lobes containing clusters of cells called:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Alveoli
Each breast has glandular tissue divided into 15-20 mammary lobes. Inside a lobe, the cells that make milk are arranged in clusters.
(1) Mammary duct — Incorrect. The tubules of a lobe join to form a mammary duct. It carries milk out of the lobe. It is not a cluster of cells.
(2) Alveoli — Correct. The clusters of cells are called alveoli. Their cells secrete milk, which is stored in the cavities of the alveoli.
(3) Mammary lobe — Incorrect. The lobe is the larger unit that contains the clusters.
(4) Lactiferous duct — Incorrect. Several mammary ducts join to form a wider mammary ampulla. The ampulla is connected to the lactiferous duct, through which the milk is sucked out.
NCERT Extract:
The Female Reproductive System – …
