1 Keep weeds from competing with your strawberry plants. 2  Make a hole large enough to spread the roots. 3  Hill the center of the hole and place the crown slightly above soil level. 4  Spread the roots downward on the hill. 5  Fill the hole, making sure the soil only goes halfway up the crown.
(Redirected from Circle of willis). The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures.It is named after Thomas Willis (1621â1675), an English physician.Redirected from Circle of willis). The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures.
The network of arteries supplying blood flow to the brain is more likely to be incomplete in people who suffer migraine, a new study reports. Variations in arterial anatomy lead to asymmetries in cerebral blood flow that might contribute to the process triggering migraines. The image depicts the anatomy of the circle of Willis (A) and representative subjects with a complete (B) and incomplete circle of Willis (C). The arrowhead indicates absent anterior communicating artery and arrows indicate bilateral absent posterior communicating arteries.