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.
Gare de Lyon is one of the six main railway stations in Paris, France. It was built in 1895-1902 to replace the old landing stage of Lyon and It was named after the city of Lyon, which is a stop for many long-distance trains departing from the station, most of which operating towards the south of France.n general most services run to the south and east of France (TGV Trains to Southern France, the Alps, Basel in Switzerland and Rome in Italy). Gare de Lyon also hosts regional trains and the RER. Click here to book your transfer from Orly Airport to Gare de Lyon.