rhabdome

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Related to rhabdom: Rhabdomere, ommatidium, apposition eye

rhabdome

[′rab‚dōm]
(invertebrate zoology)
The central translucent cylinder in the retinula of a compound eye.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The impact of circadian clock input on the concentrations of opsins in rhabdoms (Rh-LpOps) has been examined in LEs by measuring the intensities of opsin immunoreactivity in rhabdoms per unit of rhabdom area at different times of the day and night in LEs with and without clock input (Battelle, 2013; Battelle et al., 2013).
These interdigitations may be regarded as forming a poorly developed closed rhabdom. Finally we found a region with distinct, but irregularly arranged microvilli forming a rather disordered, open rhabdom.
1993; Schuh and Slater 1995), it can de added that the eyes dorsally have the ommatidia with a rhabdom pattern of R7 and R8 in tandem (Fischer et al.
Where this is not the case, this challenge appears to have been addressed by increased transparency of the cell bodies in the secondary eyes, increased size of the rhabdoms, and presence of an underlying reflective tapetum that approximately doubles the light path available to incident photons (Fig.
(3) The rhabdom is not as densely packed with microvilli as we would expect from an optimized photoreceptor, as in the cerebral ocelli, for instance (Fig.
The rhabdomeres are fused to each other to form a fused type of rhabdom that is observed in transverse section (Fig.
To achieve this best fit, values for [[lambda].sub.max] and visual pigment specific absorbance were optimized, while rhabdom length was assumed to be 54 [micro]m (measured from fig.
The top half of this structure, including the refracting cornea and the underlying crystalline cone, is devoted to optics, focusing light on the top of the photosensitive structure, called the rhabdom. This rhabdom is constructed from eight receptor cells formed into a single light guide.
Rhabdom breakdown in the eye of Cirolana borealis (Crustacea) caused by exposure to daylight.
Sample scans were first made from an unexposed rhabdom which was then exposed to red light (wavelength of cut-on Ca.
The damage manifests itself as irreversible rhabdom breakdown and changes to other structures in the eye (Gaten et al., 1990).
The distal end of the rhabdom is thus made up of seven regular retinula cells, which are in contact with the proximal end of the crystalline cone.