Por favor?

Star of the seaThe body of the starfish involves a variety of curiosities ; for example, has no brains and blood .

In general , species of starfish have 5 arms but some can have 50 of them , as Labidiaster annulatus or Antarctic sea star .

These arms are born from the central disk of the body and can be short or long .

Under the central disc is star mouth .

Another curious fact is the fact the regenerative capacity of its members or their entire body , ie , the same star generates another arm in case you lose one .

Furthermore, each of the arms ripped form new stars since most of the bodies are in such members as the gonads and pyloric caeca .

Sea stars have a calcified skin that protects them from most predators and often is colored as red, orange, blue , gray or brown, these bright colors have the function of scaring or camouflage .

The surface may be a variety of textures : smooth, granular , spinous , etc.

But always covered bone plates overlapping .

The internal skeleton is formed of calcareous ossicles or plates which can be linked together.

The stars have a water vascular system which opens into the madreporite , an opening in the central part of the body.

This leads to a channel madreporite stone skeleton composed of deposits .

In turn, the stone channel is attached to a channel leading to each of the radial channels of the star.

Locomotion is given, from the water vascular system , by the feet of pipe or tube feet , which have sensory functions and are positioned at the end of each radial canal.

Most species measure 12 to 24 inches in diameter, but there are some that are less than 2 inches and others that have more than 1 meter in diameter.