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 true colour of life is the colour of the body, the colour of the covered red, the implicit and not explicit red of the living heart and the pulses. It is the modest colour of the unpublished blood.”
    —Alice Meynell (1847–1922)

    “The heart is forever inexperienced.”
    —Henry David Thoreau (1817–1862)

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