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Human reproduction, image - Coggle Diagram

- - - - 10-15 years old
      - Every 28 days, an ovary releases an ovum into one of the fallopian tubes. This is called
      - ovulation.
      - Before ovulation, the ovaries release hormones (oestrogen and progestone) and the
      - walls of the uterus become thicker with extra blood and tissue.
      - FERTILISATION the ovum develop into a baby.
        
        NOT FERTILISATION the uterus release the extra blood and tissue.
        
        (MESTRUATION)
        
        MESTRUATION: 14 days after ovulation. 3 to 5 days. Around 50 menstrual cycle stops.
        
        (MENOPAUSE)
- - - - The sperm cells leave the testicles through two tubes called the vasa deferentia and carry the
      - sperm cells to the seminal vesicles and the prostate. Both of these produce liquids to make a
      - substance called semen.
      - PENIS:
        
        The penis is a tubular organ that contains the urethra. Males release sperm through the
        
        urethra in a process called ejaculation. Urine is also released from the body through the
        
        urethra.
        
        PUBERTY IN BOYS:11-16 years old. The brain produces hormones that affect the testicles. Then the testicles start
        producing a hormone called testosterone, which causes physical changes.
- - - - The zygote travels to the uterus
      - It attaches to the wall of the uterus and it continues to grow and divide.
      - Embryo. It continues growing and developing.
      - FROM EMBRYO TO FOETUS:
        
        9 weeks, all of the embryo´s organ shave formed and it becomes a foetus.
        
        The foetus floats inside a sac of amniotic fluid.
        
        The foetus is connected to the mother by the umbilical cord and the placenta.
        
        The placenta provides the foetus with oxygen and other nutrients. The placenta also
        
        absorbs carbon dioxide and other waste products that the foetus produces.
        
        LABOURT AND BIRTH:
        
        40 weeks.
        
        LABOUR: The muscle of the uterus start to contract.
        
        These contractions push the baby against the cervix.
        
        The amniotic sac breaks and the fluid is released.
        
        The baby is pushed through the cervix, into the vagina, or birth canal
        
        The placenta separates from the wall of the uterus and leaves through the birth canal.