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Borst / Breast

The breasts of a woman are a secondary sex characteristic. In addition to feeding children, breasts also have a sexual function. The breasts (mammary glands in Latin) consist of mammary tissue, fatty tissue and connective tissue. Both breasts also have an extension of the tissue of the breast that extends into the axilla, which is called Spense’s tail. Men also have breasts, although they have much less breast tissue than women.

de Borst

de Borst

The breasts are divided into four quadrants: upper left, lower left, upper right and lower right of the nipple. During and immediately after pregnancy the breast glandular tissue produces milk that is transported through lactiferous ducts to the nipple, where the baby can drink.

In women, the breasts overlay the musculus pectoralis major (the major pectoral muscle) and the musculus pectoralis minor (the minor pectoral muscle). These muscles are involved in the movement of the shoulders and arms.

Anatomy of the breast

The breast is composed of glandular tissue, connective tissue, fat, blood vessels and lymphatic vessels. The breast tissue overlay the major pectoralis muscle and extends from about the 2nd to the 6th rib, and from the sternum (breastbone) to the anterior part of the axilla. The glandular tissue consists of 12 to 20 conical terminal lobular units that produce the milk. Each lobe has its ducts draining to the nipple.