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tapetum |
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tapetum [tə′pēd·əm] (botany) A layer of nutritive cells surrounding the spore mother cells in the sporangium in higher plants; it is broken down to provide nourishment for developing spores. (neuroscience) A reflecting layer in the choroid coat behind the neural retina, chiefly in the eyes of nocturnal mammals. A tract of nerve fibers forming part of the roof of each lateral ventricle in the vertebrate brain. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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