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  2. Human reproductive system - Wikipedia

    en.wikipedia.org/wiki/Human_reproductive_system

    Male reproductive system. The male reproductive system is a series of organs located outside the body and around the pelvis region of a male that contribute towards the reproduction process. The primary direct function of the male reproductive system is to provide the male sperm for fertilization of the ovum. [3] Penile shrinkage due to low ...

  3. Male reproductive system - Wikipedia

    en.wikipedia.org/wiki/Male_reproductive_system

    The main male sex organs are the penis and the scrotum, which contains the testicles that produce semen and sperm, which, as part of sexual intercourse, fertilize an ovum in the female's body; the fertilized ovum develops into a fetus, which is later born as an infant. The corresponding system in females is the female reproductive system.

  4. Human reproduction - Wikipedia

    en.wikipedia.org/wiki/Human_reproduction

    The male reproductive system contains two main divisions: the testicles where sperm are produced, and the penis where semen is ejaculated through the urethra. In humans, both of these organs are outside the abdominal cavity. Having the testicles outside the abdomen facilitates temperature regulation of the sperm, which require specific ...

  5. Sex cords - Wikipedia

    en.wikipedia.org/wiki/Sex_cords

    These cells then induce the production and organisation of cells making up the testicular cords. [2] These cords will eventually become the testes, which in turn produce hormones, in particular testosterone. [8] These hormones drive the formation of the other male sex characteristics, and induce testicular descent out of the abdomen. [4]

  6. Spermatic cord - Wikipedia

    en.wikipedia.org/wiki/Spermatic_cord

    The spermatic cord is the cord-like structure in males formed by the vas deferens (ductus deferens) and surrounding tissue that runs from the deep inguinal ring down to each testicle.

  7. Cell theory - Wikipedia

    en.wikipedia.org/wiki/Cell_theory

    From these conclusions about plants and animals, two of the three tenets of cell theory were postulated. 1. All living organisms are composed of one or more cells 2. The cell is the most basic unit of life. Schleiden's theory of free cell formation through crystallization was refuted in the 1850s by Robert Remak, Rudolf Virchow, and Albert ...

  8. Sex differences in human physiology - Wikipedia

    en.wikipedia.org/wiki/Sex_differences_in_human...

    The human male reproductive system. The human female reproductive system. The male and female perineum. Males and females have different sex organs. Females have two ovaries that store the eggs, and a uterus which is connected to a vagina. The external genitals are called the vulva. Males have testicles that produce sperm.

  9. Reproductive system - Wikipedia

    en.wikipedia.org/wiki/Reproductive_system

    The female reproductive system has two functions: The first is to produce egg cells, and the second is to protect and nourish the offspring until birth. The male reproductive system has one function, and it is to produce and deposit sperm. Humans have a high level of sexual differentiation.

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