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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Prog Mol Biol Transl Sci. 2011;100:287–330. doi: 10.1016/B978-0-12-384878-9.00007-8

Figure 5. Structure of rod and cone photoreceptors.

Figure 5

Photoreceptor cells are composed of an outer segment that contains visual pigment-bound membrane disks. The inner segment is the polarized cell body of the photoreceptor, where the nucleus resides basally and the cilium originates apically and extends into the OS. The synaptic terminal forms synaptic connections to the interneurons of the retina, relaying visual input [71, 287].