rod
[rod] 1. a straight, slim mass of substance.
2. one of two types of visual cells, cylindrical segments that contain
rhodopsin; together with the
cones they form the light-sensitive elements of the
retina. See also
eye and
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 (def. 2).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.