Best Answer: VASCULAR SYSTEM NOT AMBULACRAL SYSTEM!!!! Echinoderms are characterized by a unique coelomic water vascular system. This is a hydraulically controlled system consisting of a circumoral ring around the esophogus with connecting radial canals each leading to an ambulacrum.The radial canals in crinoids run along each arm into an ambulcral groove and tube feet.f the radial canals run down the ambulacral grooves and are not covered by plates then the system is considered open, if the radial canals are primarily internal and externalized through pores, the system is closed. Source(s): mayor r Â· 8 years ago.
Lyon is a city found in Rhone-Alpes, France. It is located 45.75 latitude and 4.85 longitude and it is situated at elevation 173 meters above sea level. Lyon has a population of 472,317 making it the biggest city in Rhone-Alpes. It operates on the CEST time zone.
Lyon /ly-on/ [1 syll.] as a boys' name is of French origin, and the meaning of Lyon is lion. Also possibly a place name: the city of Lyons, France. Kreatif forms: Lalyon, Lyonla, Lyonne.hown below is an analysis of the popularity of the boy name Lyon and corresponding names. The only popular variation form of Lyon (not in Top 1000) is Leo (#97 last year) .