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.
Other cell types are present in the retina as well. The retina is perfused by blood vessels which form three layers (plexi). Two of the vascular plexi are deep inside the retina and one is near the inner surface of the retina (Figure 1). These vessels are made up of vascular endothelial cells and mural cells.