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:

    “Both equal hurt, in this change sought our bliss:
    My true love hath my heart and I have his.”
    —Sir Philip Sidney (1554–1586)

    “I struggled with the horror of daybreak,
    I chose it for my lot! If questioned on
    My utmost pleasure with a man
    By some new-married bride, I take
    That stillness for a theme
    Where his heart my heart did seem....”
    —William Butler Yeats (1865–1939)

    “How frail the human heart must be—
    a mirrored pool of thought.”
    —Sylvia Plath (1932–1963)