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.
Additional structures, not directly associated with vision, are found as outgrowths of the retina in some vertebrate groups. In birds, the pecten is a vascular structure of complex shape that projects from the retina into the vitreous humour; it supplies oxygen and nutrients to the eye, and may also aid in vision.
The receptors are arrayed along the back of the interior of each eye, in the tissue called the retina. There are two types of cells that act as photoreceptors in the eye: ro â¦ ds and cones.Rods detect only the presence or absence of light without distinguishing between colors, thus giving black and white vision (as at night).here are two types of cells that act as photoreceptors in the eye: ro â¦ ds and cones. Rods detect only the presence or absence of light without distinguishing between colors, thus giving black and white vision (as at night).