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.
When all arteries are functioning normally, their blood supplies will not mix where they meet in the Circle because the pressure of their streams will be equal. As long as the Circle of Willis can maintain blood pressure at fifty percent of its normal level, no infarction or death of tissue will occur in an area where a blockage exists.