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valentinak56 [21]
3 years ago
10

During pregnancy, the changes in the milk glands and ducts of the breast occur because of the influence of ____.

Biology
1 answer:
Thepotemich [5.8K]3 years ago
8 0

Answer:

Prolactin

Explanation:

It is produced by the pituitary gland and stimulates the development of the mammary ducts to produce lactation milk especially in the latter stages of pregnancy (from third trimester). This is in preparation for birth so that the child can suckle when born. The levels of prolactin are regulated by estrogen levels in the blood and when progesterone levels fall during end of pregnancy.

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