Tag: vitamin A

February 26, 2026 / Mohammed looti

RHODOPSIN

The Fundamental Nature of Rhodopsin in Visual Perception Rhodopsin represents a cornerstone of biological sensory systems, serving as the primary light-sensitive receptor protein found within the photoreceptor cells of the human retina. As a specialized member of the G-protein coupled receptor (GPCR) superfamily, it is uniquely adapted to convert electromagnetic radiation into biochemical signals, a […]

November 5, 2025 / Mohammed looti

RETINAL

Introduction and Definition of Retinal The term retinal is fundamentally an adjective pertaining directly to the retina, the highly specialized, multilayered sensory tissue lining the inner surface of the back of the eye. This structure serves as the primary interface between the external light environment and the internal neural system, undertaking the critical task of […]