Rachis Rachis Rachis is a biological term for a main axis or "shaft" (from the Greek "ράχις, backbone, spine"). In vertebrates a "rachis" can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the "rachis" usually forms the supporting axis of the body and is then called the spine or vertebral column. "Rachis" can also mean the central shaft of pennaceous feathers. In the gonad of the invertebrate nematode "C. elegans", a "rachis" is the central cell-free core or axis of the gonadal arm of both adult males and hermaphrodites where the germ cells have
Calamus, Wisconsin 105.1 males. For every 100 females age 18 and over, there were 110.4 males. The median income for a household in the town was $50,000, and the median income for a family was $54,107. Males had a median income of $33,636 versus $24,671 for females. The per capita income for the town was $19,818. About 5.5% of families and 7.8% of the population were below the poverty line, including 13.0% of those under age 18 and 5.4% of those age 65 or over. Calamus, Wisconsin Calamus is a town in Dodge County, Wisconsin, United States. The population was 1,005 at