Editing Cone cell (section)

===Histology===
[[File:Cone cell eng.svg|thumb|The structure of a cone cell]]
Cone cells are shorter but wider than [[Rods (eye)|rod cells]]. They are typically {{val|40|-|50|u=um}} long, and their diameter varies from {{val|0.5|-|4.0|u=um}}. They are narrowest at the fovea, where they are the most tightly packed. The S cone spacing is slightly larger than the others.<ref>{{cite book | author = Brian A. Wandel | year = 1995 | title = Foundations of Vision | url = https://foundationsofvision.stanford.edu/chapter-3-the-photoreceptor-mosaic/ | access-date = 2015-07-31 | archive-url = https://web.archive.org/web/20160305155309/https://foundationsofvision.stanford.edu/chapter-3-the-photoreceptor-mosaic/ | archive-date = 2016-03-05 | url-status = dead }}</ref>

Like rods, each cone cell has a synaptic terminal, inner and outer segments, as well as an interior nucleus and various [[mitochondria]]. The synaptic terminal forms a [[synapse]] with a neuron [[bipolar cell]]. The inner and outer segments are connected by a [[cilium]].<ref name="Kandel"/> The inner segment contains [[organelle]]s and the cell's nucleus, while the outer segment contains the light-absorbing [[photopsins]], and is shaped like a [[cone]], giving the cell its name.<ref name="Kandel"/>

The outer segments of cones have invaginations of their [[cell membrane]]s that create stacks of membranous disks. [[Photopigments]] exist as [[transmembrane protein]]s within these disks, which provide more surface area for light to affect the pigments. In cones, these disks are attached to the outer membrane, whereas they are pinched off and exist separately in rods. Neither rods nor cones divide, but their membranous disks wear out and are worn off at the end of the outer segment, to be consumed and recycled by [[phagocytosis|phagocytic]] cells.