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.
Monkey. Mouse. The retinal pigment epithelium (RPE) is the pigmented cell layer located just outside the retina and is attached to what is called the choroid, a layer filled with blood vessels that nourish the retina.The RPE closely interacts with photoreceptors in the maintenance of visual function.The RPE is composed of a single layer of hexagonal cells that are densely packed with granules of melanin that absorbs the light energy that arrive to the retina.he RPE closely interacts with photoreceptors in the maintenance of visual function. The RPE is composed of a single layer of hexagonal cells that are densely packed with granules of melanin that absorbs the light energy that arrive to the retina.