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. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: Pflugers Arch. 2021 Apr 20;473(9):1493–1516. doi: 10.1007/s00424-021-02558-7

Fig. 1. Schematic of rod and cone photoreceptors.

Fig. 1

Simplified schematics of a rod photoreceptor (left) and a cone photoreceptor (right), indicating the functional compartments. Plus and minus indicate polarity of the microtubules. Axoneme microtubules are solid blue lines, cellular microtubules are grey broken lines. Orange circles represent the adherens junctions/outer limiting membrane. Red circles indicate subapical region (SAR). CP=Calyceal process, OS = Outer segment, IS = inner segment, CC = connecting cilium, Syn = synapse. H = horizontal cell process, B = ON bipolar cell process, OFF BC = OFF bipolar cell process.