There are about 15,000 species in this phylum. The phylum includes earthworms, leeches, and marine worms known as polychaetes. Species in this phylum have metameric bodies. Metameric bodies are divided into segments called annuli.The annuli are covered in tiny hairs called setae. Setae help the worms move.Each segment contains parts of the organism's excretory, circulatory, reproductive, and nervous system! The head and the rear of the body is not segmented. The digestive system of species in this phylum runs the length of the body.Food is taken in at one end of the body and expelled at the other end. Annelids have two sets of muscles that help them move.here are about 15,000 species in this phylum. The phylum includes earthworms, leeches, and marine worms known as polychaetes. Species in this phylum have metameric bodies. Metameric bodies are divided into segments called annuli.
Kim Sutton is in her 16th season as Chico Stateâs head womenâs soccer coach and 22nd at the NCAA Division II level.
Western Governors University (WGU) is a private, nonprofit, online American university based in Salt Lake City, Utah. The university was founded by 19 U.S. governors in 1997 after the idea was formulated at a 1995 meeting of the Western Governors Association.The university uses a competency-based learning model, with students working online. Robert Mendenhall is the current university president.GU is regionally accredited by the Northwest Commission on Colleges and Universities. Regional accreditation is by the NWCCU, the regional accreditor of other schools such as the University of Washington, the University of Utah, Brigham Young University, Gonzaga University, and the University of Oregon, among others.