Seastar

• Pyloric Stomach: Function: Receives and begins digestion of food. (Digestion)
• Ring Canal: Function: Distributes water to the radial canals (Circulation)
• Radial Canal: Function: Transports water to the tube feet (Transport)
• Cardiac Stomach: Function: Extrudes from the body to digest prey. (Predation.)
• Digestive Gland: Function: Assists in digestion and nutrient absorption. (Digestion.)
• Pyloric Duct: Function: Connects the pyloric stomach to the digestive gland. (Connection)
• Anus: Function: Eliminates undigested waste. (Excretion)
• Gonads: Function: Reproductive organs producing gametes. (Reproduction.)
• Stone Canal: Function: Transports water from the madreporite to the ring canal. (Conduit)
• Umbral Ossicles: Function: Support and protect the madreporite. (Protection)
• Madreporite: Function: Filters seawater into the water vascular system. (Filtration)
• Central Disk: Function: Houses vital organs and connects to the arms. (Core)
• Ampullae: Function: Contract to move water into tube feet. (Contraction)
• Tube Feet: Function: Assist in locomotion, feeding, and attachment.(Locomotion)
• Gills: Function: Aid in gas exchange. (Respiration)
• Spine: Function: Protects the sea star and helps with locomotion. (Protection)
• Radial Nerve: Function: Coordinates movements and senses stimuli. (Coordination)
• Podium: Function: Houses the tube feet. (Housing)
• Digestive Tract: Function: Processes food for digestion. (Processing)
• Ampulla: Function: Helps control the movement of tube feet. (Control)