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Describe the Respiratory Organ Used by Sea Cucumbers

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There are peristomial gills that act as respiratory organs in sea urchins and cloacal trees are used for respiration in sea cucumbers. They communicate with each other by hormonal signals that expel water. Holothuroidea Sea Cucumbers Respiratory System Water is pumped in and out of this system by the action of the muscular cloaca and it is probable that a. . The epithelium contains goblet cells one of the specialized columnar epithelial cells that produce mucus to trap debris. With the help of various nerve endings connected to the skin they gain a sense of touch and can feel the presence of light. Sea cucumbers are echinodermslike starfish and sea urchins. In pulmonary ventilation air is inhaled through the nasal and oral cavities the nose and mouth. The sea cucumber breathes by drawing oxygenated water in through the anus. Some sea cucumbers can eject their digestive system and associated organs when disturbed or due to ...
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