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:

    “Queen. And must we be divided? Must we part?
    King Richard. Ay, hand from hand, my love, and heart from heart.”
    —William Shakespeare (1564–1616)

    ““It was the mask engaged your mind,
    And after set your heart to beat,
    Not what’s behind.””
    —William Butler Yeats (1865–1939)

    “The eye is the casement at which the heart generally looks out. Many a woman who will not show herself at the door, has tipt the sly, the intelligible wink from the window.”
    —Samuel Richardson (1689–1761)