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:

    “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)

    “It is night,
    And it is vanity, and age
    Blackens the heart of Adam. Fear,
    The yellow chirper, beaks its cage.”
    —Robert Lowell (1917–1977)

    “Southern women are ... all at heart abolitionists.”
    —Ella Gertrude Clanton Thomas, U.S. diarist. As quoted in Divided Houses, ch. 1, by Leeann Whites (1992)