Harrington rod


rod

 [rod] 1. a straight, slim mass of substance.2. one of two types of visual cells, cylindrical segments that contain rhodopsin" >rhodopsin; together with the cones" >cones they form the light-sensitive elements of the retina. See also eye" >eye and vision" >vision. Called also retinal rod.Corti's r's pillar cells.Harrington rod a rigid contoured metal rod used in Harrington instrumentation.olfactory rod the slender apical portion of an olfactory bipolar neuron, a modified dendrite extending to the surface of the epithelium.retinal rod rod" >rod (def. 2).