retinula


Also found in: Dictionary, Medical.

retinula

[rə′tin·yə·lə]
(invertebrate zoology)
The receptor element at the inner end of the ommatidium in a compound eye.
Mentioned in ?
References in periodicals archive ?
Lamellated membranes, called "myeloid bodies" by Zonana (1961) in squid material, were also found in the retinula cells of the eye of the cuttlefish we studied.
In each retinula cell, the microvilli composing the rhabdomere are oriented toward the center of the rhabdom.
Diurnal changes in retinula cell sensitivities and receptive fields (two-dimensional angular sensitivity functions) in the apposition eyes of Ligia exotica (Crustacea, Isopoda).
exotica, because rhabdomeres are frequently skewed and the axes of ommatidial groups of retinula cells are not always parallel to the axes of the dioptric structures.
Light-initiated responses of retinula and eccentric cells in the Limulus lateral eye.
The rhabdoms occupy about 62% of the volume of the retinula cell layer.