Ivarosa87 is
14 years ago
鳥的前胃v.s後胃(砂囊)在幹啥呀??
tomadog says
14 years ago
腺胃的胃壁很厚,能分泌大量消化液;肌胃的胃壁由堅實的肌肉構成,内層附着黄色角質膜,内含有一定數量的砂石,具有磨碎食物的功能。
Ivarosa87 says
14 years ago
soga soga
Ivarosa87 says
14 years ago
感謝鳥大師!
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