GENERAL HISTOLOGY

Detailed explanation-1: -water-vascular system. noun. : a system of vessels in echinoderms containing a circulating watery fluid that is used especially for the movement of tentacles and tube feet.

Detailed explanation-2: -Other terms sometimes used to refer to the water vascular system are “ambulacral system” and “aquiferous system".

Detailed explanation-3: -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.

Detailed explanation-4: -The echinoderm water vascular system is a circulatory system based on running external water through the organism.