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The Heart

  • The Heart The Heart

    Your heart beats and sends oxygen throughout your entire body. Find out how it works and how heart problems can be fixed.

  • Words to Know (Heart Glossary) Words to Know (Heart Glossary)

    Your heart beats and sends blood all around your body. Find out more about the heart, from A to Z, in this glossary.

  • Atrial Septal Defect Atrial Septal Defect

    An atrial septal defect is an opening in the wall between two parts of the heart that lets oxygen-rich blood from one side mix with oxygen-poor blood on the other side. Read more about ASDs in this article for kids.

  • Heart Murmurs Heart Murmurs

    Everyone's heart makes sounds, but some people have hearts that make more noise than others. Usually, however, these heart murmurs don't mean anything is wrong. Find out more about these mysterious murmurs.

  • Mitral Valve Prolapse Mitral Valve Prolapse

    Mitral valve prolapse is a heart problem that usually isn't much to worry about. Learn more about it here.

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