Ambulacral System Small 220×320 Medium 440×640 Large 704×1024 Download Tiff Original 1649×2400 | (330.8 KB) Description "Ambulacral system of a starfish. a, ampullae; ap, Polian vesicles; c, circular canal; m, madreporite; m', madreporic canal; p, tube-feet; r, radial vessels; r', branches to ampullae." -Parker, 1900 Keywords ambulacral system, ampullae, Echinoderm, sea star, starfish anatomy, tube-feet, vesicles Galleries Sea Urchins and Sea Stars Source: Parker, T. Jeffrey A Manual of Zoology (New York, NY: The MacMillan Company, 1900)
