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Encyclopedia > Outer plexiform layer
Outer plexiform layer
Section of retina. (Outer plexiform layer labeled at right, sixth from the top.)
Plan of retinal neurons. (Outer plexiform layer labeled at left, fourth from the bottom.)
Gray's subject #225 1016
Dorlands/Elsevier l_05/12480917

The outer plexiform layer (external plexiform layer) is a layer of neuronal synapses in the retina of the eye. It consists of a dense network of synapses between dendrites of horizontal cells from the inner nuclear layer, and photoreceptor cell inner segments from the outer nuclear layer. It is much thinner than the inner plexiform layer, where horizontal cells synapse with retinal ganglion cells. Image File history File links Gray881. ... Human eye cross-sectional view. ... Image File history File links Gray882. ... Elseviers logo. ... Drawing by Santiago Ramón y Cajal of neurons in the pigeon cerebellum. ... Illustration of the major elements in a prototypical synapse. ... Human eye cross-sectional view. ... A human eye. ... In biology, a dendrite is a slender, typically branched projection of a nerve cell, or neuron, which conducts the electrical stimulation received from other cells to the body or soma of the cell from which it projects. ... Plan of retinal neurons. ... The inner nuclear layer or layer of inner granules is made up of a number of closely packed cells, of which there are three varieties, viz. ... Photoreceptor cells are contained in the retina and are responsible for transducing, or converting, light into signals that can be ultimately transmitted to the brain via the optic nerve. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... It has been suggested that this article or section be merged into retina. ...

The synapses in the outer plexiform layer are between the rod cell endings or cone cell branched foot plates and horizontal cells. Unlike in most systems, rod and cone cells release neurotransmitters when not receiving a light signal. Normalised absoption spectra of human rod (R) and cone (S,M,L) cells. ... Normalised absorption spectra of human cone (S,M,L) and rod (R) cells Cone cells, or cones, are cells in the retina of the eye which only function in relatively bright light. ... Chemical structure of D-Aspartic Acid, a common Amino Acid neurotransmitter. ...

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy after Henry Gray, is an anatomy textbook widely regarded as a classic work on human anatomy. ...



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