| Word: Ostium (pl. ostia) (= pore) Description: Any opening in the exopinacoderm through which water enters the sponge. Synonyms: Pore Category: Anatomy and Aquiferous System |
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| Word: Ostium (pl. ostia) (= pore) Description: Any opening in the exopinacoderm through which water enters the sponge. Synonyms: Pore Category: Anatomy and Aquiferous System |