摘要：The nurse shark( Ginglymostomacirratum ), also knownin Portuguese as “tubarãolixa” or “lambaru” , is found mostly in groups of variable size. Specimens inhabit the bottom of the sea, in warm, littoral waters. The nervous system of these sharks arises embryologically from the medullary plate, in which the cephalon develops. The cephalon is divided into three parts, prosencephalon, mesencephalon, and rhombencephalon . These sharks have very sensitive sensors, both mechanoreceptors and electroreceptors, that contribute to the exploration of their surrounding aquatic world and enhance their survival.
关键词：Chondrychthyes;Neuromasts;Ampullae of Lorenzini.
