Parts of a Starfish
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madreporite
• it is on the outside of the starfish - it is a strainer, it filters the starfish
stone canal
• it is part of the water vascular system, it moves food and nutrients
ring canal
• it is shaped like a ring, it pulls whatever is filtered by the madreporite, and sends it out of the starfish
ampullae
• it gives the starfish motion
radial canal
• they are skinny tubes that transport nutrients or waste
gills
• they have gills so they can live and breathe in the water
spine
• they are on the outside of a starfish
pyloric stomach
• it is in the center of a starfish, they use it to get their food
cardiac stomach
• it is on the outside of a starfish, they use it to get their food
ocellus
• it is an eye spot, they have one on each of their rays