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.
It is part of the rod cells that are responsible for night vision. Rhodopsin is found in the membrane of the retina. The retina is the part of the eye that contains cells that detect light. There are rod cells there that respond to dim light, and cone cells that give color vision in bright light.he rod cells contain the pigment rhodopsin, which is highly sensitive to light. To enable humans to see at night, it absorbs green-blue light most strongly and appears purplish in color. Therefore, another name for this compound is visual purple.