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Human reproduction

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Human reproduction

  1. 1. BY JESÚS
  2. 2.  Boys have a penis, urethra, vas deferens, prostate, seminal vesicles and testicles.  Girls have a vagina, ovaries, fallopian tubes and a uterus.
  3. 3.  Girls develop bigger breasts, rounder hips and hair under their arms and in the pubic area. Boys develop a deeper voice, wider shoulders, bigger muscles and facial and body hair.
  4. 4.  Reproductive cells:
  5. 5.  It produces female gametes called egg cells. The fertilised egg cell develops into a fetus.
  6. 6.  It produces male gametes called sperm cells. The sperm cells travel into the woman’s reproductive system.
  7. 7.  Fertilisation is when the sperm penetrates the egg cell to produce a zygote. During sexual intercourse sperm cells swim into the uterus and up the fallopian tubes to the egg cell.
  8. 8.  The time between the fertilization of the egg cell and the birth of the baby.
  9. 9.  The baby leaves the uterus through the vagina.