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单词 pecten
释义
pecten

Biology
  • Any of various comblike structures in animals. The pecten in the eyes of birds is a heavily pigmented structure with a network of blood vessels attached to the optic nerve and projecting into the vitreous humour. It is thought to supply the retina with nutrients and oxygen, and maintain acid–base balance inside the eye. A simple form of this structure is found in the eyes of reptiles.


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