ECHINODERMS AND PROTOCHORDATES
Starfish dissection
Dorsal view of starfish showing external anatomy
Dorsal view of a dissected starfish showing rectal cecum, anus, madreporite, pyloric stomach, pyloric duct
Dorsal view of a dissected starfish showing madreporite, stone canal, cardiac stomach, and ampullae
Dorsal view of a dissected starfish showing gonads and ampullae
Close up of madreporite and stone canal
Dorsal view of a dissected starfish showing pyloric cecum and pyloric ducts
Dissection showing where cardiac stomach opens into the mouth
Ventral view of starfish showing external anatomy
Asteris
arm (microscopic x.s.)
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