Science Fair Project Encyclopedia
Ommatidia
The compound eye of insects is composed of hundreds of unit eyes called ommatidia. An ommatidium contains a cluster of photoreceptor cells surrounded by support cell, and pigment cells. The outer part of the ommatidium is overlayed with a transparent cornea. The photograph to the right shows a cluster of photoreceptor cells from a single ommatidium from Drosophila melanogaster (magnified 400X). It is about 85 μm in length and 5-10 μm in diameter. The nucleus and the rhabdomere from a photoreceptor cell are visible.
03-10-2013 05:06:04
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details