The movement of the sea. Star of the sea are invertebrates have surface solid but not attached to the muscles. Sea water piping system (mobile water vascular system) the structure of the water pipe comprises
.Madreporite (madreporite) is a grid water is on the back of the sea star
water ring (ring canal) เป็นท่อน้ำ around the mouth. Connect the pipes of small stone canal called a pipe later from the madreporite
.Pipe radial (radial canal) water separated from water ring radially
.Tube feet (tube feet) is a structure with a small pipe is large at the bottom of the body. The top of the tube ฟีทมี looks swell bulb, called the ampulla (ampulla) tube feet each one will be
.A small pipe connected with the water pipe radial
.Mechanism of movement of the sea with water systems. Occurs when the water flow logging water. Madreporite through pipes into the water ring radial and ampulla. When the muscles around the ampulla shrink.At the same time the tongue within the ampoule ass are closed to prevent water flow back out through the tube side. After that, the muscles of the tube feet are shrinking.
.Tube ฟีทมี short size down. The pressurized water back into the bulb ampulla again. Stretching and contraction of the tube feet of several, causing pressure until the sea star can move.(sucker) serves to adhesion to the surface while the movement. Help track moving better.
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