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:
“Ay, look: high heaven and earth ail from the prime foundation;
All thoughts to rive the heart are here, and all are vain:
Horror and scorn and hate and fear and indignation—
Oh, why did I awake? When shall I sleep again?”
—A.E. (Alfred Edward)
“She saw the couches of the dead, and where the fibrous root
Of every heart on earth infixes deep its restless twists:”
—William Blake (1757–1827)
“The hapless Nymph with wonder saw:
A whisker first and then a claw,
With many an ardent wish,
She stretch’d in vain to reach the prize.
What female heart can gold despise?
What Cat’s averse to fish?”
—Thomas Gray (1716–1771)