Varicose veins. For other uses, see Varices. Varicose veins are veins that have become enlarged and twisted. The term commonly refers to the veins on the leg, although varicose veins can occur elsewhere. Veins have pairs of leaflet valves to prevent blood from flowing backwards (retrograde flow or venous reflux).
Sand Lake, Michigan. Sand Lake is a general law village in Kent County in the U.S. state of Michigan. The population was 500 at the 2010 census.
Sandy Lake. The Sandy Lake Recreation Area is situated at the outlet of Big Sandy Lake, about 120 miles north of Minneapolis. It is located on the canoe route that linked Lake Superior and the Mississippi River. When the dam was built in 1859, it included a lock to pass boat traffic through.