Unit 4 human reproduction alberto and diego s

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Unit 4 human reproduction alberto and diego s

  1. 1. Human reproduction By Alberto Fernández and Diego Barrios
  2. 2. Reproduction Living things create other living things in the process of reproduction . Human beings reproduce through sexual reproduction , bringing male and female sex cells together .
  3. 3. Primary sexual characteristics  The reproductive systems are the primary sexual characteristics.We alredy have them when we are born and they are different for male and female.
  4. 4. Reproductive cells Sperm Ova
  5. 5. Female reproductive system
  6. 6. Male reproductive system
  7. 7. Fertilisation •Fersilitation occurs when an ovum and a sperm join inside the fallopian tubes and they create a single cell called zygote. The zygote goes down the fallopian tubes, it is implanted in the wall of the uterus and it becomes an embryo.
  8. 8. Pregnancy and birth
  9. 9. Labour  Dilation: rhytmic contractions make the openning of the vagina and the vulva big enough to the baby comes out.  Expulsion: the baby is born and the doctor cuts the umbilical cord.  Afterbirth: the placenta comes out of the mother`s body.
  10. 10. The end

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