CBSE Grade-12 Biology | 2. HUMAN REPRODUCTION by Pavan | Learn Smarter
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2. HUMAN REPRODUCTION

2. HUMAN REPRODUCTION

Human reproduction encompasses various processes including gametogenesis, insemination, fertilisation, and development during pregnancy. The male and female reproductive systems each play distinct roles, with spermatogenesis occurring in the male testis and oogenesis in the female ovaries. Following fertilisation, the zygote undergoes division and implantation leading to pregnancy, which culminates in parturition, the delivery of the baby.

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  1. 2
    Human Reproduction

    Human reproduction involves the formation of gametes, fertilization, and...

  2. 2.1
    The Male Reproductive System

    The male reproductive system comprises the testes, accessory ducts, glands,...

  3. 2.2
    The Female Reproductive System

    The female reproductive system plays a crucial role in human reproduction,...

  4. 2.3
    Gametogenesis

    Gametogenesis is the process of gamete formation, which includes sperm...

  5. 2.4
    Menstrual Cycle

    The menstrual cycle is the reproductive cycle in female primates marking the...

  6. 2.5
    Fertilisation And Implantation

    Fertilisation in humans involves the fusion of sperm and ovum, leading to...

  7. 2.6
    Pregnancy And Embryonic Development

    This section details the stages of pregnancy and the development of the...

  8. 2.7
    Parturition And Lactation

    Parturition involves the delivery of the fetus, driven by neuroendocrine...

  9. 2.8

    This section summarizes the key aspects of human reproduction, covering the...

  10. 2.9

    This section provides exercises to reinforce understanding of human...

What we have learnt

  • Humans reproduce sexually as viviparous organisms.
  • The male reproductive system is composed of testes, accessory ducts, glands, and external genitalia.
  • The female reproductive system includes ovaries, oviducts, the uterus, vagina, and mammary glands.

Key Concepts

-- Gametogenesis
The process of forming gametes, which includes spermatogenesis in males and oogenesis in females.
-- Menstrual Cycle
A cyclical process that occurs in females, involving the preparation of the uterine lining for potential pregnancy, ovulation, and menstruation.
-- Fertilisation
The union of male and female gametes to form a zygote, which leads to the development of an embryo.
-- Parturition
The process of childbirth, triggered by hormonal changes that induce uterine contractions.

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