Inner plexiform layer

Inner plexiform layer
Inner plexiform layer
	Section of retina. (Inner plexiform layer labeled at right, fourth from the top.)
	Plan of retinal neurons. (Inner plexiform layer labeled at left, fifth from the top.)
Details
Identifiers
Latin	stratum plexiforme internum retinae
TA98	A15.2.04.015
FMA	58704
	Anatomical terminology [edit on Wikidata]

The inner plexiform layer is an area of the retina that is made up of a dense reticulum of fibrils formed by interlaced dendrites of retinal ganglion cells and cells of the inner nuclear layer. This is where amacrine and bipolar cells synapse at the dendrites of the ganglion cells. Within this reticulum a few branched spongioblasts are sometimes embedded. To isolate the ON and OFF signals bound for the brain, this layer has two sublaminae.. Signals from cone cells converge on two separate sublaminae: the inner ON-center for invaginating cone bipolar cells and a outer OFF-center for flat bipolar cells.

References

1 2 "Inner Plexiform Layer by Helga Kolb – Webvision". Retrieved 2026-09-17.
↑ Nolte, John (2002). The Human Brain: An Introduction to Its Functional Anatomy. 5th ed. St. Louis: Mosby. pp. 416–7. ISBN 0-323-01320-1.
↑ "Cone Pathways through the Retina by Helga Kolb – Webvision". Retrieved 2026-10-20.

External links

https://www.webvision.pitt.edu/book/part-ii-anatomy-and-physiology-of-the-retina/inner-plexiform-laye/
Histology image: 07902loa – Histology Learning System at Boston University

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[:1-1] 1 2 "Inner Plexiform Layer by Helga Kolb – Webvision". Retrieved 2026-09-17.

[2] Nolte, John (2002). The Human Brain: An Introduction to Its Functional Anatomy. 5th ed. St. Louis: Mosby. pp. 416–7. ISBN 0-323-01320-1.

[3] "Cone Pathways through the Retina by Helga Kolb – Webvision". Retrieved 2026-10-20.