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:

    “Le coeur a ses raisons que la raison ne connait point. The heart has its reasons which reason does not know of.”
    —Blaise Pascal (1623–1662)

    “In every tyrant’s heart there springs in the end
    This poison, that he cannot trust a friend.”
    —Aeschylus (525–456 BC)

    “One enemy, of many, who knows well
    Your heart is luminous
    In the watched dark, quivering through locks and caves,
    Will pull the thunderbolts
    To shut the sun, plunge, mount your darkened keys....”
    —Dylan Thomas (1914–1953)