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:

    “When a man grows old his joy
    Grows more deep day after day,
    His empty heart is full at length
    But he has need of all that strength
    Because of the increasing Night
    That opens her mystery and fright.”
    —William Butler Yeats (1865–1939)

    “I that loved and you that liked, shall we begin to wrangle?
    No, no, no, my heart is fast, and cannot disentangle.”
    —Unknown. Since First I Saw Your Face (l. 3–4)

    “People are governed with the head; kindness of heart is little use in chess.”
    —Sébastien-Roch Nicolas De Chamfort (1741–1794)