The Circle of Willis (also called Willis' Circle, Loop of Willis, cerebral arterial circle, and Willis Polygon) is a circle of arteries that supply blood to the brain and surrounding structures. It is named after Thomas Willis (1621–1675), an English physician.
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Famous quotes containing the words circle of and/or circle:
“Perchance we may,
Where now this night is day,
And even through faith of still averted feet,
Making full circle of our banishment,
Amazed meet;”
—Coventry Kersey Dighton Patmore (1823–1896)
“Every few years something new breaks into the circle of my thoughts.”
—Mason Cooley (b. 1927)