CBSE Class 10 Answered
girls breast with diagram ? and explain in it ?
Asked by urvashi sharma | 21 Nov, 2013, 05:35: PM
Expert Answer
- Mammary glands or milk glands are modified sweat glands.
- Mammary glands are present in both, males and females. However, these glands remain in undeveloped form in males. Mammary glands are developed in females to form a pair of breasts.
- Each mammary gland consists of a central projection called nipple. There are about 15-20 milk ducts, which open into the nipple.
- Each milk duct is branched inwards into 15-20 lobes, which consist of grape-like structure of milk-secreting cells called alveoli.
- The activity of mammary gland is related to reproductive hormones, prolactin, oestrogen and progesterone, which are prominently secreted during pregnancy.
- The milk secreted by mammary gland is highly nutritious for the new-born baby.
Answered by Sheetal Kolte | 21 Nov, 2013, 06:52: PM
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