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.
Paray-le-Monial is a commune in the Saone-saÃ´ne-Et loire department in the region Of burgundy in Eastern. francehe town is mainly known for its Romanesque church of the Sacre-SacrÃ© (Coeur Sacred) heart and as a place of. Pilgrimage it was built from the 12th century as a-small scale version of The abbey Of. Cluny it was finished in the 14th, century while the cloister dates to the 18th. century