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BREAST

Breast serves as a necessary reproductive organs in women. Human female possesses a pair of breasts containing mammary glands. These are situated in the front of the thorax on pectoral muscles. Each mammary gland has 15-20 tubulo-alveolar lobules contained in its connective tissue. The space between the lobules is filled with fatty tissue. The lobules contain milk glands in the form of bunches of grapes, which secrete milk. Numerous small ductules arise from each lobule, combine to form a lactiferous duct. Such lactiferous ducts open independently in the nipple.

Fig: Mammary GlandFig: Mammary Gland

A nipple is a pigmented structure which is a elevated knob like structure at the apical part of mammary glands. The area adjacent to the nipples is also deeply pigmented, which is known as areola mammae. The area surrounding the nipples become much elevated because of the accumulation of fat and by the presence of muscles, Nipple is provided with about 15-20 small pores of 0.5 mm size. In men the nipples are vestigeal. 

Mammary glands produce a nutritive fluid, milk for the nourishment of young ones. Milk protects the young ones from various infections upto some months after birth.

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FAQs on Doc: Mammary Glands - Additional Study Material for NEET

1. What are mammary glands?
Ans. Mammary glands are a type of exocrine gland found in mammals, including humans. They are responsible for producing and secreting milk to nourish offspring.
2. How many mammary glands do humans typically have?
Ans. In humans, there are typically two mammary glands, one on each breast. However, some individuals may have additional supernumerary mammary glands.
3. What is the function of mammary glands in non-lactating women?
Ans. In non-lactating women, the mammary glands are primarily responsible for maintaining the breast tissue structure and supporting the development of milk-producing cells. They also play a role in sexual arousal and sensitivity.
4. How do mammary glands produce milk?
Ans. The production of milk in mammary glands is regulated by hormones, particularly prolactin and oxytocin. Prolactin stimulates milk production, while oxytocin triggers the release of milk from the mammary glands during breastfeeding.
5. Can men have mammary glands?
Ans. Yes, men have mammary glands as well, although they are typically undeveloped and non-functional. In some cases, men may develop a condition called gynecomastia, which causes the mammary glands to enlarge and become more prominent.
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