|
分娩
|
|
哺乳期
|
|
|
|
A:
婴儿的吸吮发送神经冲动到脑。B:
其结果是，催乳素被释放到血液里。C:催乳素刺激乳房分泌乳汁。 |
|
|
|
分娩以后不久，母亲的乳房产生水样液体，称为初乳（colostrum）。初乳对新生儿似乎有提高其免疫力的作用。约3天后，初乳由乳汁所替换。乳汁的产生叫泌乳（lactation，自拉丁语：lac=乳汁）。婴儿的吸吮刺激释放催乳素（prolactin），该激素依次诱导乳房分泌乳汁。为孩子哺乳的母亲能够以这种方式产生乳汁达数月。在分娩后的许多月份里，由于体内一些激素改变的原因，大多数哺乳期的妇女会停止排卵（并因此而停经）。显然，这也就意味着同时不会发生怀孕。可是，夫妻们不应该指望这种自然保护机制而想避孕。“哺乳不是避孕的替代措施。”对于一位哺乳的妇女来说，当她在让自己的孩子吸吮乳房时，产生性唤起是完全正常的。无论如何没有理由为此而变得心慌意乱或惊慌失措。正好相反，因为这种生理反应有着重要的生理和心理功能，应该自得其乐才是。
|
|
Birth
|
|
Lactation
|
|
Immediately after birth, the mother's breasts produce a watery fluid called colostrum which seems to have some immunizing effect on the baby. About three days later, this fluid is replaced by milk. The production of milk is called lactation (from Latin lac: milk). The baby’s suckling stimulates the release of the hormone prolactin which, in turn, induces the breasts to secrete their milk. Mothers who nurse their children are able to do so for many months. Most women stop ovulating (and therefore menstruating) during the first few months because of certain hormonal changes in the body. Obviously, this also means that, in the same period, no new conception can take place. However, couples should not count on this natural protection." Nursing a baby is no substitute for contraception.
It is quite normal for a woman to become sexually aroused while she has her child suckling on her breast. There is no reason whatsoever to become upset or alarmed about this. On the contrary, the experience should be enjoyed as it serves important physiological and psychological functions. Illustration:
A: The baby’s suckling sends nerve impulses to the brain. B: As a result, the hormone prolactin is released into the bloodstream. C: Prolactin stimulates the breasts to secrete milk.
|
