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  1. Human reproductive system | Definition, Diagram & Facts | Britannica

    Nov 27, 2025 · The principal functions of these structures are to transport the spermatozoa from the testes to the exterior, to allow their maturation on the way, and to provide certain secretions that help …

  2. Human reproductive system - Male Anatomy, Hormones, Reproduction ...

    Nov 27, 2025 · The principal functions of these structures are to transport the spermatozoa from the testes to the exterior, to allow their maturation on the way, and to provide certain secretions that help …

  3. Human reproductive system - Female Anatomy, Hormones, …

    Nov 27, 2025 · Human reproductive system - Female Anatomy, Hormones, Reproduction: The female gonads, or sexual glands, are the ovaries; they are the source of ova (eggs) and of the female sex …

  4. Animal reproductive system | Physiology, Functions, & Facts | Britannica

    animal reproductive system, any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living …

  5. Reproductive system disease | Types, Causes, Symptoms, & Treatment ...

    Reproductive system disease, any of the diseases and disorders that affect the human reproductive system. They have a wide range of causes, from genetic abnormalities to infections, and affect …

  6. Human reproductive system - Testes, Hormones, Anatomy | Britannica

    Sep 26, 2025 · Human reproductive system - Testes, Hormones, Anatomy: The two testes, or testicles, which usually complete their descent into the scrotum from their point of origin on the back wall of the …

  7. human reproductive system summary | Britannica

    In early embryos, the reproductive systems are undetermined. By birth the organs appropriate to each sex have typically developed but are not functioning. They continue to grow, and at puberty their …

  8. Seminiferous tubule | anatomy | Britannica

    Within the walls of the tubules, also, are many randomly scattered cells, called Sertoli cells, that function to support and nourish the immature sperm cells by giving them nutrients and blood products.…

  9. Human reproductive system - Ovaries, Hormones, Reproduction

    Nov 27, 2025 · In most species the genetic information is carried on chromosomes in the nucleus of reproductive cells called gametes, which then fuse to form a diploid zygote. The zygote develops into …

  10. reproductive system - Students | Britannica Kids | Homework Help

    The organs, glands, and other structures that enable an organism to reproduce are known as the reproductive system. (This article deals only with reproduction in animals.) (For plant reproduction …