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  • 男性生殖系统

    A man and woman sitting together on a swing near a waterfall.

    Why do males and females look different?
    ::为什么男女看起来不同?

    The features that make males unique from females, such as this male's facial hair, are controlled by the sex . The production of the sex hormones is a key role of the male reproductive system .
    ::性荷尔蒙的产生是男性生殖系统的一个关键作用。

    The Male Reproductive System Functions
    ::男性生殖系统的职能

    Dogs have puppies. Cats have kittens. All organisms reproduce, obviously including humans. Like other mammals , humans have a body system that controls . It is called the reproductive system . It is the only system that is very different in males and females. The male and female reproductive systems have different organs and different functions.
    ::狗有小狗,猫有小猫。所有生物都繁殖,显然包括人类。像其他哺乳动物一样,人类有一个控制身体的系统。它被称为生殖系统。它是唯一在男性和女性中非常不同的系统。男性和女性生殖系统有不同的器官和功能。

    The male reproductive system has two main functions:
    ::男性生殖系统有两个主要功能:

    1. Producing .
      ::生产
    2. Releasing testosterone into the body.
      ::将睾酮释放到体内

    Sperm are male gametes , or reproductive . When a male gamete meets a female gamete, they can form a new organism. Sperm form when certain cells in the male reproductive system divide by , resulting in cells with half the amount of as a regular "body" cell. More precisely, sperm cells are haploid sex cells, having one set of . Regular are diploid , having two set of chromosomes. As there are 46 chromosomes in a diploid human cell, how many are in a human sperm cell?
    ::精子是男性的网格,或生殖。当一个男性的网格遇到一个女性的网格时,它们可以形成一个新的有机体。当男性生殖系统中的某些细胞除以(......)时,精子会形成一个有一半正常的“身体”细胞。更确切地说,精子细胞是零散的性细胞,有一套。普通细胞是低血球,有两套染色体。由于在低血细胞中有46种染色体,人类精子细胞中有多少种?

    When males grow older, they produce millions of sperm each day. The male reproductive system also maintains and transports and delivers sperm and a protective fluid, known as semen .
    ::当男性长大后,他们每天生产数以百万计的精子,男性生殖系统还维持、运输和提供精子和一种保护性液体,即精液。

    Testosterone is the main sex hormone in males. Hormones are chemicals that control many body processes. Testosterone has two major roles:
    ::睾酮是雄性的主要性激素。荷尔蒙是控制许多身体过程的化学品。睾酮有两个主要作用:

    • During the teen years, testosterone causes the reproductive organs to mature. It also causes other male traits to develop. For example, it causes hair to grow on the face and allows for muscle growth.
      ::青春期,睾丸酮导致生殖器官发育成熟,还导致其他男性特征发育,例如,在脸上长发,允许肌肉成长。
    • During , testosterone helps a man to produce sperm.
      ::在此期间,睾酮帮助一个人生产精子。

    When a hormone is released into the body, we say it is "secreted." Testosterone is secreted by males, but it is not the only sex hormone that males secrete. Males also secrete small amounts of estrogen . Even though estrogen is the main female sex hormone, scientists think that estrogen is needed for normal sperm production in males.
    ::当荷尔蒙释放到体内时,我们说它是“秘密的 ” 。 睾丸酮是男性秘密的,但它不是男性秘密的唯一性激素。 男性也秘密少量雌激素。 尽管雌激素是主要的雌性激素,但科学家认为雄性正常精子生产需要雌激素。

    A male flexes his arm to showcase muscle development.

    Testosterone, the main sex hormone in males, allows men to build larger muscles than women.
    ::睾丸酮是男性的主要性激素,允许男性制造比女性更大的肌肉。

    Summary
    ::摘要

    • The main functions of the male reproductive system are to produce sperm and secrete testosterone.
      ::男性生殖系统的主要功能是产生精子和蛋白质素。
    • Testosterone, the main sex hormone in males, causes the reproductive organs to mature and other male traits to develop.
      ::睾丸酮是男性的主要性激素,导致生殖器官发育成熟和其他男性特征。

    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。

    • Male Reproductive System at
      ::男生殖系统 男生殖系统 男生殖系统 男生殖系统 男生殖系统 男 男 生殖系统 男 男 生殖系统 男 男 生殖系统 男 男 男 生殖系统
    1. In addition to the reproductive system, the testes are part of which other organ system? Why?
      ::除了生殖系统外,睾丸是哪个其他器官系统的一部分?为什么?
    2. What composes the male genitals?
      ::男性生殖器是什么成分?
    3. What occurs during the first stage of puberty in boys?
      ::在男孩的青春期第一阶段发生什么情况?

    Review
    ::回顾

    1. What are the two main roles of the male reproductive system?
      ::男性生殖系统的两个主要作用是什么?
    2. How many chromosomes are in a normal human sperm cell?
      ::普通人类精子细胞中有多少染色体?
    3. Explain the jobs of testosterone in males.
      ::解释一下雄性睾丸激素的工作。