Feather development non-nervous. They have a tubular central shaft called the rachis; coming off either side of the rachis are the veins, which have a series of barbs with interlocking connections that are called barbules. The rachis and attached veins make up the spathe. The opposite of the rachis is the calamus, which anchors the feather to the body and is moved by attached dermal muscles. There are many different types of feathers that mostly follow this basic design with few variations based on evolutionary needs. Feathers are sometimes referred to as “elaborate reptile scales” just as birds are sometimes viewed as
Calamus-Wheatland High School 1A school (Iowa's smallest schools enrollment tier), according to the Iowa High School Athletic Association and Iowa Girls High School Athletic Union. The school is a member of the thirteen-team Tri-Rivers Conference, which comprises schools from rural communities in Clinton, Jackson, Jones, Buchanan, Delaware, and Linn counties. The men's varsity basketball team finished second in the 2010 state basketball tournament, falling to the Siouxland Conference's Rock Valley High School. Calamus-Wheatland High School Calamus Wheatland High School is a four-year comprehensive high school located in Wheatland, Iowa. The school is part of the Calamus-Wheatland Community School District, and has an enrollment