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:
“a sorrows crown of sorrow is remembering happier things.
Drug thy memories, lest thou learn it, lest thy heart be put to proof,
In the dead unhappy night, and when the rain is on the roof.”
—Alfred Tennyson (18091892)
“The world stands out on either side
No wider than the heart is wide;
Above the world is stretched the sky,
No higher than the soul is high.”
—Edna St. Vincent Millay (18921950)
“So, well go no more a-roving
So late into the night,
Though the heart be still as loving,
And the moon be still as bright.
For the sword outwears its sheath,
And the soul wears out the breast.
And the heart must pause to breathe
And love itself have rest.”
—George Gordon Noel Byron (17881824)