Lexic.us

Definition of Retinal

1. Noun. Either of two yellow to red retinal pigments formed from rhodopsin by the action of light.

2. Adjective. In or relating to the retina of the eye. "Retinal cells"

Definition of Retinal

1. a. Of or pertaining to the retina.

Definition of Retinal

1. retinene [n -S] - See also: retinene

Medical Definition of Retinal

1. 1. Pertaining to the retina. 2. The aldehyde of retinol, derived by the oxidative enzymatic splitting of absorbed dietary carotene and having vitamin A activity. In the retina, retinal combines with opsins to form visual pigments. One isomer, 11 cis retinal combines with opsin in the rods (scotopsin) to form rhodopsin or visual purple. Another, all trans retinal (trans r.), visual yellow, xanthopsin) results from the bleaching of rhodopsin by light, in which the 11 cis form is converted to the all trans form. Retinal also combines with opsins in the cones (photopsins) to form the three pigments responsible for colour vision. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Retinal

retinaculum caudale retinaculum cutis retinaculum extensorum retinaculum flexorum retinaculum musculorum extensorum inferius retinaculum musculorum extensorum superius retinaculum musculorum flexorum retinaculum of articular capsule of hip retinaculum of flexor muscles retinaculum of skin

retinaculum patellae laterale retinaculum patellae mediale retinaculum tendinum retinae retinal (current term) retinal (current term) retinaldehyde retinaldehyde dehydrogenase retinaldehyde isomerase retinaldehyde reductase

retinalite retinals retinal adaptation retinal anlage tumour retinal artery retinal artery occlusion retinal blood vessels retinal camera retinal cone retinal cone

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