Question

Describe the structure of mammary glands.

Answer 1

Hint: The mammary gland is a gland found in females' breasts that is responsible for lactation, or milk production. Within the breasts, both males and females contain glandular tissue; however, glandular tissue in females begins to grow during puberty in response to oestrogen secretion. Only after childbirth do mammary glands produce milk.

Complete answer:
The alveoli, which are lined by milk-secreting epithelial cells, are the most basic components of the mammary gland. Myoepithelial cells surround it. 

These alveoli group together to form lobules, each of which has a lactiferous duct that drains into the nipple apertures. 

Myoepithelial cells could contract like muscle cells, forcing milk from the alveoli to the nipple via the lactiferous ducts. It collects in the widenings of the ducts here. A suckling baby essentially presses milk out of these sinuses.

A simple mammary gland is made up of all the milk-secreting tissue that leads to a single lactiferous duct, whereas a complicated mammary gland is made up of all the simple mammary glands and serves only one nipple. 

Humans have two complex mammary glands, one in each breast, with each complex mammary gland containing ten to twenty simple glands.
Female breast anatomy is shown in the below diagram.

Lactation is the breast gland's primary function. Lactation is the process by which milk is produced and secreted or ejected. Lactation is a procedure that occurs after a kid is born and throughout pregnancy. Prolactin is a hormone that regulates and stimulates milk production. The anterior lobe, which is a component of the pituitary gland, secretes prolactin. The hormone oxytocin is responsible for milk ejection. The posterior lobe of the pituitary gland releases the oxytocin hormone.

Note:
Male mammals have rudimentary or non-functioning mammary glands, while female mammals have fully functional mammary glands. The mammary glands' function is known to be regulated by the endocrine system. The hormonal changes that occur during parturition cause these glands to become functioning.
A projection known as a nipple can be found on the outside of the breast. The circular hyperpigmented region surrounds the nipple. The areola is the name for this area. It's either a dark pink or a light brown colour. The areolar glands are a group of sebaceous glands on the surface of the areola.