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23: The Reproductive System

  • Page ID
    61636
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    Chapter Objectives:
    • Describe the anatomy of the male and female reproductive systems, including their accessory structures
    • Explain the role of hypothalamic and pituitary hormones in male and female reproductive function
    • Trace the path of a sperm cell from its initial production through fertilization of an oocyte
    • Explain the events in the ovary prior to ovulation
    • Describe the development and maturation of the sex organs and the emergence of secondary sex characteristics during puberty

    • 23.1: Prelude to the Reproductive System
      In this chapter, you will explore the male and female reproductive systems, whose healthy functioning can culminate in the powerful sound of a newborn’s first cry.
    • 23.2: Anatomy and Physiology of the Male Reproductive System
      The penis is the male organ of copulation. Columns of erectile tissue called the corpora cavernosa and corpus spongiosum fill with blood when sexual arousal activates vasodilatation in the blood vessels of the penis. Testosterone regulates and maintains the sex organs and sex drive, and induces the physical changes of puberty. Interplay between the testes and the endocrine system precisely control the production of testosterone with a negative feedback loop.
    • 23.3: Anatomy and Physiology of the Female Reproductive System
      The female reproductive system functions to produce gametes and reproductive hormones, just like the male reproductive system; however, it also has the additional task of supporting the developing fetus and delivering it to the outside world. Unlike its male counterpart, the female reproductive system is located primarily inside the pelvic cavity (Figure 27.2.1). Recall that the ovaries are the female gonads. The gamete they produce is called an oocyte.
    • 23.4: Development of the Male and Female Reproductive Systems
      The development of the reproductive systems begins soon after fertilization of the egg, with primordial gonads beginning to develop approximately one month after conception. Reproductive development continues in utero, but there is little change in the reproductive system between infancy and puberty.


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