Shape: The shape of the mammary gland is hemispherical in young adult females but becomes pendulous in the later stage of life. However, a part of it called the axillary tail pierces the deep fascia and lies in the axilla. Situation: The mammary gland is situated in the pectoral region in the superficial fascia. In these glands, the apical part of the cells and a part of the cytoplasm are lost in the secretion. It is also a vital accessory organ of the female reproductive system. Though it is present in both sexes, it is well developed in females and rudimentary in males. The organ's primary function is to secrete milk. The mammary gland is a highly evolved and specialized organ present in pairs, one on each side of the anterior chest wall.
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