Question

In humans, nipples develop as modified sweat glands during formation of the embryo. Does presence of nipples differentiate a male mammal from a female mammal? Can both males and females produce milk? Explain your answer using humans and fetal pigs as a reference.

Answer 1

Ans. Most mammals have nipples bacause mammals being breast feeder. Most male and female  mammals heave nipples which probably has to do with mammals being breast feeder.

Mammary gland is a milk producing gland and it is characteristic of all female mammals. Hence only female only produce milk. Mammary gland present in rudimentary and generally nonfunctional in males. These glands are regulated by endocrine system and it can be functional in response to change in hormone.

A mammary gland is exocrine gland in human and other mammals that produce milk. It is responcible for lactation that is production of milk. Mammary gland are derived from modification of sweat glands. They first appear in embryonic life as clumps of cell proliferating from longitudinal ridge of ectoderm is known as milk line from the buds. The number of these clumps that ultimately become breast varies depending on species of mammals. In human normally one breast develops on each side of chest.