rhabdom

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rhabdom

(răb′dəm, -dŏm′)
n.
A rodlike structure in the center of each ommatidium in the compound eye of an arthropod, composed of microvilli extending from the surrounding retinular cells.

rhabdom

or

rhabdome

a transparent rod that passes down the centre of an insect or crustacean ommatidium. see EYE, COMPOUND.
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References in periodicals archive ?
Ciliary induction of the rhabdomes seems to be improbable in the receptor cells of cuttlefish, because the cilia are always vestigial and they disappear from the receptor cells before the apical processes begin to be formed (Yamamoto 1985).
Thus, the basic pattern of a square rhabdome composed of rhabdomeres from 4 contiguous cells can be seen even in the retinas of newly hatched juveniles.
Wolken (1958) first described the rhabdome of the eyes of Octopus and Sepia as being formed from the radial arrangement of 4 retinula cells, which are separated from each other by pigment cells.