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:

    “O Mary, canst thou wreck his peace,
    Wha for thy sake wad gladly die?
    Or canst thou break that heart of his,
    Whase only faut is loving thee?”
    —Robert Burns (1759–1796)

    “So in the dark we hide the heart that bleeds,
    And wait, and tend our agonizing seeds.”
    —Countee Cullen (1903–1946)

    “The heart knows its own bitterness, and no stranger shares its joy.”
    —Bible: Hebrew, Proverbs 14:10.