1. Turn the seastar over to its ventral or oral surface (underside). 2. Locate the mouth in the center of the central disc. Find the ring of oral spines surrounding the mouth. 3. Find the groove that extends down the underside of each arm. This is called the ambulacral groove.. Locate the central disc in the center of the seastar. Locate the small, round hard plate called the madreporite on top of the central disc. Water enters through this into the water vascular system.
Lyon or (more archaically) Lyons (UK /liËËÉn/ or /ËliËÉn/; French pronunciation: [ljÉÌ], locally: [lijÉÌ]; Arpitan: Liyon [ÊjÉÌ]) is a city in east-central France, in the Auvergne-RhÃ´ne-Alpes region, about 470 km (292 mi) from Paris and 320 km (199 mi) from Marseille. Inhabitants of the city are called Lyonnais.
Lyon Township is located in the southwest corner of Oakland County, which is in southeast Michigan. Approximately 32 square miles in size, the Township is bordered by Dixboro Road on the west, Napier Road to the east, Pontiac Trail to the north, and Eight Mile Road to the south.