photoreceptor cell R7 [FBbt_00004225]
Inner photoreceptor cell of the ommatidium whose rhabdomere is located distally, directly above that of R8 (Wernet and Desplan, 2004). Each has a single axon that extends through a single lamina optic cartridge without making synapses. This axon crosses the first optic chiasm and extends through a single column of the medulla where it makes pre-synaptic contacts, mainly with medulla layers M1 and M5 (Takemura et al., 2008), before terminating in M6 (Gao et al., 2008; Sancer et al., 2019). This term refers to a type of adult eye photoreceptor cell, defined based on the position of its rhabdomere within each ommatidium - see figure 4 in Wolff and Ready (1993). It does not refer to Rh7-expressing photoreceptors.
Note
This page displays the raw VFB json record for this term. Please use the link below to open the term inside the Virtual Fly Brain viewerOpen photoreceptor cell R7 in VFB
VFB Term Json
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"short_form": "FBbt_00003755",
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"short_form": "FBbt_00003754",
"label": "medulla layer M5"
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"short_form": "FBbt_00003750",
"label": "medulla layer M1"
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}
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