It gives origin to the epithelioid lining of the body cavity and water-vascular system of the adult.
Upon the under surface of the foot is a conspicuous pore, which opens into a water-vascular system of the foot.
The cavity of the diverticula after the separation of the water-vascular system, forms the body-cavity.
The tube-feet are in connection with a system of vessels filled with fluid, known as the water-vascular system of the Starfish.
I would rather be able to dissect a star-fish's water-vascular system than know the price of Consols.
The diverticula from the alimentary cavity form the water-vascular system and the somatic and splanchnic layers of mesoblast.
The water-vascular system is a structure common to all Echinoderms; and vessels of a comparable character are found in some worms.
The remaining parts of the water-vascular system are also developed as outgrowths of the original vesicle.
This entire system, called the water-vascular system, is characteristic of the branch Echinodermata.
They have locomotor organs, the ambulacra, and a water-vascular system peculiar to themselves.