魚類學名詞

名詞 定義 dentine A hard mesodermal material in teeth and some scales (cosmoid, ganoid and placoid scales) produced by odontobasts. Like bone but without cells as the odontoblasts retreat leaving behind dentinal tubules (canaliculi) for protoplasmic processes. 齒質 組成牙齒或某些鱗片 (硬鱗與盾鱗) 中層的堅硬物質。 類似硬骨但是沒有細胞及微管。