Definition of Retinal rod

1. Noun. A visual receptor cell that is sensitive to dim light.

Exact synonyms: Rod, Rod Cell
Group relationships: Retina
Generic synonyms: Visual Cell
Terms within: Retinal Purple, Rhodopsin, Visual Purple

Medical Definition of Retinal rod

1. Major photoreceptor cell of vertebrate retina (about 125 million in a human eye). Columnar cells (about 40m long, 1m diameter) having three distinct regions: a region adjacent to and synapsed with, the neural layer of the retina contains the nucleus and other cytoplasmic organelles, below this is the inner segment, rich in mitochondria, that is connected through a thin neck (in which is located a ciliary body) to the outer segment. The outer segment largely consists of a stack of discs membrane infoldings that are incompletely separated in cones) that are continually replenished near the inner segment and that are shed from the distal end and phagocytosed by the pigmented epithelium. The membranes of the discs are rich in rhodopsin, the pigment that absorbs light. (03 Jul 1999)

Lexicographical Neighbors of Retinal Rod

retinal dysplasia
retinal embolism
retinal fold
retinal ganglion cell
retinal ganglion cells
retinal image
retinal isomerase
retinal monooxygenase
retinal neovascularization
retinal perforation
retinal pigmented epithelial cell
retinal pigments
retinal purple
retinal reductase
retinal rod (current term)
retinal rod (current term)
retinal scanning
retinal vein
retinal vein occlusion
retinal vessels
retinas
retinasphaltum
retine
retinectomy
retinene
retinene
retinene-1
retinene-2
retinenes
retinerved

Other Resources:

Search for Retinal rod on Dictionary.com!Search for Retinal rod on Thesaurus.com!Search for Retinal rod on Google!Search for Retinal rod on Wikipedia!

Search