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:
“Building worlds is not enough for the deeper urging mind;
but a loving heart sates the striving spirit.”
—Novalis [Friedrich Von Hardenberg] (1772–1801)
“Cassius. Must I endure all this?
Brutus. All this? Ay, more! Fret till your proud heart break.”
—William Shakespeare (1564–1616)
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