What Is The Name Of The Living Relay System That Coordinates Movement Of Arm? The sea star has no brain, but a nerve ring in its center, like a relay station that coordinates the movement of its arms. This nervous system relays impulses from light, touch and chemical sensors around its body. Five arms mean
What Are The Three Important Parts Of Echinoderm? The axial organ, a complex and elongated mass of tissue found in all echinoderms except holothurians, represents the common junction of the perivisceral coelom, the water-vascular system, and the hemal system. What 3 things generally characterize echinoderms? Although all living echinoderms have a pentamerous (five-part) radial symmetry,
Do Echinoderms Have Organs? Do echinoderms have organs? Other key echinoderm features include an internal skeleton and spines, as well as a few organs and organsystems. Although echinoderms look like they have a hard exterior, they do not have an external skeleton. Do echinoderms have tissues or organs? The axial organ, a complex and elongated