Question

A sectional view of the mammary gland shows
(i) Nipple and Areola
(ii) Mammary lobe, Alveolus, and Duct
(iii) Antibodies, Pectoralis major muscles, and Ribs
(iv) Ampulla and Lactiferous duct

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

Answer 1

Hint:The mammary gland is an exocrine gland that is found in mammals used for producing milk to feed offspring. The cross-sectional view of the mammary glands shows the nipple, areola, ampulla, mammary lobe, mammary alveolus, mammary duct, ribs, and the pectoralis muscle.

Complete answer: The mammary gland is an exocrine gland as it possesses mammary ducts through which milk is secreted through the nipple. These glands are found as organs in primates, udders in ruminants, and drugs in other mammals.
These glands are only capable of lactation in female species when nursing for the offspring. The process of lactation is often induced after birth by a key hormone called prolactin and other ancillary hormones such as oxytocin.
The sectional view of the mammary glands shows almost all features of the gland such as the ribs, with the pectoralis muscle. Attached to them are the mammary lobes and mammary alveolus, where the milk production occurs, which are connected to specialized mammary ducts, which transport the milk from the alveolus and the lobe to the ampulla. The ampulla converges together to form a single duct known as the lactiferous duct which then opens out into the nipple which is surrounded by a darker skin patch called the areola.

Note:The mammary gland is an exocrine gland, found in female mammals, which produce milk to nurse the offspring.
The ribs and pectoralis muscles are common to both males and females.
The mammary alveoli and lobe are where milk is produced and moves to the duct, which then converges to form the ampulla and the lactiferous duct.
The lactiferous duct opens out through the nipple which is surrounded by a patch of darker skin called the areola.