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:

    “The bone-frame was made for
    no such shock knit within terror,
    yet the skeleton stood up to it:
    the flesh? it was melted away,
    the heart burnt out, dead ember,
    tendons, muscles shattered, outer husk dismembered....”
    —Hilda Doolittle (1886–1961)

    “Lovers, the conclusion is
    Doubled sighs and jealousies
    In a single heart that grieves
    For lost honour among thieves.”
    —Robert Graves (1895–1985)

    “Wee image of my bonnie Betty,
    I fatherly will kiss and daut thee,
    As dear an’ near my heart I set thee
    Wi’ as guid will,
    As a’ the priests had seen me get thee
    That’s out o’ hell.”
    —Robert Burns (1759–1796)