GENERAL HISTOLOGY

Detailed explanation-1: -The starfish nervous system comprises radial nerve cords located in each of the five arms and linked by a circumoral nerve ring located in the central disk region.

Detailed explanation-2: -We concluded that starfish are slightly bilateral in behavior, and they are, to some extent, bilateral animals.

Detailed explanation-3: -While a starfish lacks a centralized brain, it has a complex nervous system with a nerve ring around the mouth and a radial nerve running along the ambulacral region of each arm parallel to the radial canal.

Detailed explanation-4: -Sea stars are related to sand dollars, sea urchins, and sea cucumbers, all of which are echinoderms, meaning that they have five-point radial symmetry.

Detailed explanation-5: -For example, pies, snowflakes, and starfish are radially symmetric because they have many different lines of symmetry (dividing them into matching halves) and the lines cross one another at the center.