Section outline

  • A young girl in a blue dress stands next to a smiling woman.

    What causes a girl to develop into a woman?
    ::是什么导致一个女孩发展成一个女人?

    Adult female characteristics, such as breasts, develop during the teen years. What causes this to happen? The of the female traits is caused by the produced by the female reproductive system .
    ::成年女性特征,如乳房,在十几岁时发展,是什么原因造成这种情况?女性特征是由女性生殖系统产生的。

    The Female Reproductive System Functions
    ::妇女生殖系统职能

    Most of the male reproductive organs are outside of the body. But are inside of the body. The male and female organs also look very different and have different jobs. Two of the functions of the female reproductive system are similar to the functions of the . The female system:
    ::男性生殖器官大多在身体之外,但属于身体内,男女生殖器官也大不相同,有不同的工作。

    1. Produces gametes , the reproductive , which are called eggs in females.
      ::产卵的基因组,即生殖, 被称为雌性卵。
    2. Secretes a major sex hormone, estrogen .
      ::隐藏了主要的性激素,雌激素

    One of the main roles of the female reproductive system is to produce eggs. Eggs ( Figure ) are female gametes, and they are made in the ovaries . After , females release only one egg at a time. Eggs are actually made in the body before birth, but they do not fully develop until later in life. Like , eggs are produced by , so they contain half the number of as the original cell.
    ::女性生殖系统的主要作用之一是产卵。卵子(图)是雌性卵子,产卵在卵巢中。之后,雌性一次只释放一个蛋。卵子在出生前就实际在身体中产出,但直到晚年才充分发育。比如,卵子是由...生产出来的,因此它们含有作为原始细胞的一半数量。

    Another role of the female system is to secrete estrogen. Estrogen is the main sex hormone in females. Estrogen has two major roles:
    ::女性系统的另一个作用是分辨雌激素,雌激素是女性的主要性激素。

    1. During the teen years, estrogen causes the reproductive organs to develop. It also causes other female traits to develop. For example, it causes the breasts to grow.
      ::雌激素导致生殖器官发育,还导致其他女性特征发育,例如,导致乳房生长。
    2. During , estrogen is needed for a woman to release eggs. On average, a woman releases one egg each month from her ovaries.
      ::在此期间,女性需要雌激素来释放卵,平均而言,女性每月从其卵巢中释放一个蛋。

    The female reproductive system has another important function. After puberty, the female reproductive system must prepare itself to accept a fertilized egg each cycle (about every month). This cycle is controlled by a well-planned and very complex interplay of hormones. If an egg is not fertilized, the system must prepare itself again the next cycle. The female reproductive system also supports a baby as it develops before birth, and it facilitates the baby's birth at the end of .
    ::女性生殖系统还有另一个重要功能:青春期后,女性生殖系统必须准备接受每个周期(大约每个月)的受精蛋;这一周期由精心策划的非常复杂的荷尔蒙相互作用控制;如果不给蛋施肥,则系统必须再次为下一个周期做好准备;女性生殖系统也支持婴儿在出生前发育,并便利婴儿在分娩结束时的出生。

    A round human egg cell showing a central haploid nucleus, with surrounding cytoplasm.

    This represents a human egg, which is the gamete, or reproductive cell, in females. Notice that is does not have a distinct shape, like a sperm cell has. The egg is a round cell with a haploid nucleus in the center. The egg contains most of the cytoplasm and organelles present in the first cell of a new organism.
    ::这是雌性的人类蛋或生殖细胞。注意没有明显的形状,就像精子细胞一样。蛋是一个圆形细胞,中间有条状核。蛋含有新生物体第一个细胞中的大多数细胞和有机体。

    Summary
    ::摘要

    • The functions of the female reproductive system are to produce eggs, secrete estrogen, and support a baby as it develops before birth.
      ::女性生殖系统的功能是产卵、分泌雌激素,并按婴儿出生前的发育来抚养婴儿。
    • Estrogen, the main sex hormone in females, causes the female traits and reproductive organs to develop and is needed for the release of eggs.
      ::雌性激素是雌性的主要性激素,它导致女性特征和生殖器官的发展,是释放卵所需的。

    Explore More
    ::探索更多

    Use the resource below to answer the questions that follow.
    ::利用以下资源回答以下问题。

    • Female Reproductive System at (5:01)
      ::妇女生殖系统(5:01)
    1. What hormones are involved in the female reproductive process?
      ::女性生殖过程涉及何种荷尔蒙?
    2. What are ovaries? What is their function?
      ::卵巢是什么 它们的功能是什么
    3. What is an oocyte?
      ::什么是卵细胞?
    4. How many chromosomes are in a human egg cell?
      ::人类蛋细胞里有多少染色体?
    5. What is the function of the follicles? Where are they located?
      ::卵蛋的功能是什么?它们在哪里?
    6. What is the function of the uterus?
      ::子宫的功能是什么?

    Review
    ::回顾

    1. List the two major roles of estrogen in females.
      ::列出雌激素在女性中的两个主要作用。
    2. What are the main roles of the female reproductive system?
      ::女性生殖系统的主要作用是什么?