The retinula ( literally, " small retina " ) cells of the ommatidium of the compound eye contain areas from which membranous organelles of conceivable size ( rhabdomeres ) extend.
12.
In all arthropods, there is always a rhabdom below a crystalline cone, on or near the center of the ommatidium, and always aligned with the path of light.
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Light entering at an angle passes through the thin cross-section of the photoreceptor cell, with only a tiny chance of exciting it, and is absorbed by the pigment cell, before it can enter a neighboring ommatidium.
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The inner 90 % of the ommatidium contains 6 to 9 ( depending on the species ) long and thin photoreceptor cells in the case of some butterflies often abbreviated " R cells " in literature and often numbered, e . g.
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The infraorder Cucujiformia includes the vast majority of phytophagous ( plant-eating ) beetles, united by cryptonephric Malpighian tubules of the normal type, a cone ommatidium with open rhabdom, and lack of functional spiracles on the eighth abdominal segment.
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In true flies, the rhabdom has separated into seven independent rhabdomeres ( there are actually eight, but the two central rhabdomeres responsible for color vision sit one atop the other ), such that a small inverted 7-pixel image is formed in each ommatidium.
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In some species there is a complete separation . for instance, one way to tell adult " Bemisia " from " Trialeurodes " is that the upper and lower parts of the compound eyes are connected by a single ommatidium in Bemisia, while in Trialeurodes they are completely separate.
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:( ec ) I found a rather cute write-up at a quirky site . First it points out the obvious : an ommatidium contains only about 8 rhabdomeres ( photoreceptor cells-see [ http : / / cistron . ca / ommatidia . shtml here for the fruit fly example ).
How to say ommatidium in Hindi and what is the meaning of ommatidium in Hindi? ommatidium Hindi meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.
