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  • Your Heart & Circulatory System for Kids

    ... It's Great to Circulate. You ... heart. It moves through many tubes called arteries
    and veins, which together are called blood vessels. ...

  • Heart and Circulatory System for Parents

    ... the heart. It enters the heart in the left atrium, then fills the left ventricle
    so it can be pumped into the systemic circulation. ...

  • Congenital Heart Defects for Parents

    ... The patent foramen ovale is a normal hole between the upper chambers
    of the heart. It usually closes in the first few months of life. ...

  • Coarctation of the Aorta for Parents

    ... cause high blood pressure and enlarge the heart. It also can cause
    dissection or rupture of the aorta, which can be fatal. ...

  • E-Cigarettes for Parents

    ... It was once even used as an insecticide. Nicotine affects the brain, nervous
    system, and heart. It raises blood pressure and heart rate. ...

  • E-Cigarettes for Teens

    ... It was once even used as an insecticide to kill bugs. Nicotine affects your brain,
    nervous system, and heart. It raises blood pressure and heart rate. ...

  • Tetralogy of Fallot for Parents

    ... of the heart. It records the motion of the blood through the heart and
    can measure the direction and speed of blood flow. ...