Heart

Heart

The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, rhythmic contractions. It is found in all animals with a circulatory system (including all vertebrates).

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Famous quotes containing the word heart:

    “Blows the wind to-day, and the sun and the rain are flying,
    Blows the wind on the moors to-day and now,
    Where about the graves of the martyrs the whaups are crying,
    My heart remembers how!”
    —Robert Louis Stevenson (1850–1894)

    “If with love thy heart has burned;
    If thy love is unreturned;
    Hide thy grief within thy breast,
    Though it tear thee unexpressed.”
    —Ralph Waldo Emerson (1803–1882)

    “Give sorrow words; the grief that does not speak
    Whispers the o’er-fraught heart and bids it break.”
    —William Shakespeare (1564–1616)