Question

A functional mammary gland is characteristic of all female mammals. The glandular tissue of each breast is divided into (A)____containing clusters of cells called alveoli. The cells of alveoli secrete milk, which is stored in the cavities (lumens) of alveoli. The alveoli open into(B)____ . The (B)____of each lobe join to form a (C)____. Several (C)____join to form a wider (D)____ which is connected to (E)____through which milk is sucked out.

	A	B	C	D	E
(A)	7 - 8	mammary duct	mammary ampulla	mammary tubules	lactiferous duct
(B)	15-20	mammary ampulla	mammary duct	lactiferous duct	mammary tubules
(C)	15-20	mammary tubules	mammary duct	mammary ampulla	lactiferous duct
(D)	7-8	mammary duct	mammary ampulla	lactiferous duct	mammary tubules

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer: (C)

Mammary glands are modified sweat glands and characteristics of mammalian females. In human males it is a vestigial organ. The mammary glands are paired structures (breasts) that contain glandular tissue and a variable amount of fat. The glandular tissue of each breast is divided into 15-20 mammary lobes containing clusters of cells called alveoli. The cells of alveoli secrete milk, which is stored in the cavities (lumens) of alveoli. The alveoli open into mammary tubules. The tubules of each lobe join to form a mammary duct. Several mammary ducts join to form a wider mammary ampulla which is connected to lactiferous duct through which milk is sucked out.