Evolution

HUMAN REPRODUCTION

By edurne mugarza

  • Fertilization

    Fertilization
    The fertilization ocurs when a sperm enter to the female reproductive system ,to fertilaize a ovule.
    When the sperm and the ovule meet form a new cell called zygote.

  • IMPLANTATION

    IMPLANTATION
    The embryo attaches itself to the wome wall . Blood vessels in the womb wall give to the embryo nutrients

  • Pregnancy

    Pregnancy
    The human body takes about forty weeks to develop in the womb .
    In the womb the ball of cells continues to divide to forms the diferent parts of the human body.

  • 8 weeks

    8 weeks
    All the tissues and organs develop formed.The embyro is 3 centimetres long and weighs 4 grams.

  • 32 weeks

    32 weeks
    At the ninth wek the placenta is develop.

  • Birth

    Birth
    Just before the baby is born, the bag of amniotic fluid around it burts, this is called the breaking of the waters.

  • After birth

    After birth
    After the birth, the doctors cute the umbilical cord. THIS IS THE BABY!!!