Reproduction in humans

    Cards (20)

    • Oestrogen
      female reproductive hormone
    • Progesterone
      female reproductive hormone
    • testosterone
      male reproductive hormone
    • Foetus
      8 week old embryo with all it's organs
    • Placenta
      the organ where exchange of nutrients and oxygen happens between the mother and the baby
    • testes
      produce sperm
    • sperm ducts
      carry sperm from testes to urethra
    • sperm mixed with secretion from glands to make semen
    • egg released from ovaries once a month, egg travels along fallopian tube to uterus
    • egg survives 24hrs of ovulation
    • sperm survives up to five days of ovulation
    • released egg settles into the lining, if it isn't fertilized, a period happens
    • if an egg is fertilized it continuously divides into cells and differentiates. Some form structures in embryo, some in placenta
    • umbilical cord
      where nutrients from mother in placenta are transferred to the baby.
    • ovaries release 2 hormones 

      oestrogen, progesterone
    • oestrogen purpose 

      causes uterine lining to thicken and the egg to mature
    • progesterone levels rise when egg is released, if pregnancy doesn't occur, levels decrease. Causes uterine lining to break down. ​
    • Oxygen and nutrients diffuse across placenta
    • Foetus -> mother – CO2, Urea, hormones
    • amniotic sack
      surrounds foetus, filled with amniotic fluid, protects foetus by absorbing shock
    See similar decks