Breast, in human females, are two glandular organs that secret milk for feeding newborn infants. Such gland are present in all mammals and are known in general as mammaries. Physiologycally, they are highly modified sweet glands. No other animals posses such glands, and no related precedents exist in other classes of vertebrates.

Rudimentary breasts are present in both human sexes at birth. No further development takes place in males during normal growth, but full development occurs in females in the early childbearing period. A projection called a nipple is found at the tip of each breast in both men and women. It is surrounded by a pigmented areas, the areola, that enlarges and deepens in color on pregnancy.

The female human breast consists mainly of a round mass of glandular tissue comprising about 15-20 lobes, each having a duct leading to an opening on the nipple, the duct system and glandular tissue fully develop with pregnancy. The amount of fat sheathing the glandular tissue determines the size of the breast. Connective tissue from the foundation or framework of the breast. The layer of ligaments directly beneath the breast sends strands into the breast itself, providing the firm consistency of the organ. The deep layer of connective tissue sends strands in the opposite direction into the covering of the chest muscles.

Other Organs:


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