Meaning of Dunham. Celtic name. In Celtic, the name Dunham means - Dark skinned fighter.. Other origins for the name Dunham include - Celtic, Irish.The name Dunham is most often used as a boy name or male name. Celtic Name Meaning - Dark skinned fighter. Origin - Celtic.
eyeball. 1  Photoreceptors are the cells in the retina that respond to light. Their distinguishing feature is the presence of large amounts of tightly packed membrane that contains the photopigment rhodopsin or a related molecule.
The retina of the eye of most vertebrates contains specialized cells, called photoreceptors, that detect light. The pattern of light falling on the retina is converted into a neuronal signal that is sent to the brain, and the brain then interprets the signal, changing it back into the âpictureâ seen by the eye.