A sectional view of mammory gland shows
(i) nipple + areola
(ii) mammary lobe, alveolus and duct
(iii) antibodies + pectoralis major muscles + ribs
(iv) ampulla + lactiferous duct

Options

A. (i), (ii) and (iv)
B. (i), (ii) and (iii)
C. (iii) and (iv)
D. (i), (ii), (iii) and (iv).

Answer

A

Explanation

Mammary glands or breasts are modified sweat glands that lie over the pectoral muscles. Each breast has a broad multiporous tip called nipple for the release of milk. A circular pigmenteed area called areola lies below it. Each breast contains. `15-20` glandular lobes separated from one another by dense connective tissue and adipose tissue. Each lobe is further made of a number of lobules having glandular or secretory alveoli. The cells of alveoli produce milk which is stored in the cavities or lumens of alveoli. Alveoli open ito mammary tubules and then into mammary ducts. Mammary ducts form a mammary ampulla from which a lactiferous duct develops. Each lobe produces a separate lactiferous duct. The various lactiferous ducts open at the nipple by separate pores.