Ablation, also known as catheter ablation, is a treatment that aims to control or correct certain types of abnormal heart rhythms. It uses either heat (radiofrequency ablation) or freezing (cryoablation) on the area of your heart thatâs causing the abnormal heart rhythm (or arrhythmia). This treatment creates scar tissue which: breaks abnormal circuits in the heart; destroys areas of the heart muscle which are triggering arrhythmias.
Medical Definition of RHODOPSIN. : a red photosensitive pigment in the retinal rods of marine fishes and most higher vertebrates that is important in vision in dim light, is quickly bleached by light to a mixture of opsin and retinal, and is regenerated in the darkâcalled also visual purple. a red photosensitive pigment in the retinal rods of the eye of most vertebrates that is important in vision in dim light âcalled also visual purple. ADVERTISEMENT.
The absorption of lights by visual pigments is the crucial first step in the process of photoreception. In the presence of light, the protein opsin is activated allowing retinal to bind to its active site (retinal synthesized with vitamin A). The retinal and opsin protein complex is thus known as rhodopsin. When the pigment absorbs a photon, the shape of the protein changes shape and bleaching separation occurs. Retinal must be restored in presence of ATP and Opsin must be reactivated in order for the cycle to repeat (this typically takes 30 minutes). Rhodopsin is an organic compound called a Visual Pigment. The absorption of lights by visual pigments is the crucial first step in the process of photoreception. In the presence of light, the protein opsin is activated allowing retinal to bind to its active site (retinal synthesized with vitamin A).