One of the radiating pigmented ridges, usually seventy in number, on the inner surface of the ciliary body, increasing in thickness as they advance from the orbiculus ciliaris to the external border of the iris; these, together with the folds (plicae) in the furrows between them, constitute the corona ciliaris.
Synonym: processus ciliaris.
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... much shorter outer segment than do rods, and the developing membranous processes that in rods fuse into the disc series--remains unfused in the ... in mind that in 3-D, that is really a series of plates joined at the ciliary end. http://www.mic-d.com/curriculum/lightandcolor/images/humanvisionfigure4.jpg
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