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Any of a class of reddish, light-sensitive pigments found in the retinal rods of the eyes of terrestrial and marine vertebrates, consisting of opsin and retinal. Also called visual purple.
(Biochemistry) a red pigment in the rods of the retina in vertebrates. It is dissociated by light into retinene, the light energy being converted into nerve signals, and is re-formed in the dark. Also called: visual purple See also iodopsin
[C20: from rhodo- + -opsis + -in]
a bright red photosensitive pigment found in the rod-shaped cells of the retina of certain fishes and most higher vertebrates: it is broken down by the action of dim light into retinal and opsin.
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|Noun||1.||rhodopsin - a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light|
opsin - retinal protein formed by the action of light on rhodopsin
retinal, retinene - either of two yellow to red retinal pigments formed from rhodopsin by the action of light
photopigment - a special pigment found in the rods and cones of the retina
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n. rodopsina, pigmento de color rojo púrpura que se encuentra en los bastoncillos de la retina y que facilita la visión en luz tenue.
English-Spanish Medical Dictionary © Farlex 2012