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:
“I know that I have the body of a weak and feeble woman, but I have the heart and stomach of a king, and of a king of England too.”
—Elizabeth I (1533–1603)
“My heart is turned to stone; I strike it, and it hurts my hand.”
—William Shakespeare (1564–1616)
“But the heart refuses to be imprisoned; in its first and narrowest pulses it already tends outward with a vast force and to immense and innumerable expansions.”
—Ralph Waldo Emerson (1803–1882)
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