The cubic kilometer is a metric unit of volume equal to 1,000,000,000 cubic meters. The symbol of the cubic kilometer is kmÂ³ . km3 = 1,000,000,000 m3 = 109 m3. To convert cubic kilometers to hmÂ³, damÂ³, mÂ³, dmÂ³, cmÂ³ and mmÂ³ , multiply by one followed by as many trios of zeros as there are places between the cubic kilometer and the other unit.
Rod photoreceptors are very sensitive to light and are responsible for night vision. These are the most abundant cell type in the human retina and are located closest to the back of the eye, near the retinal pigmented epithelium (RPE).
Glial cells of the Retina by Helga Kolb. Helga Kolb. Three basic types of glial cell are found in the human retina, Muller cells, astroglia and microglia. All were described for the retina by Cajal more than one hundred years ago (1892).1. Muller cells. Muller cells are the principal glial cell of the retina.elga Kolb. Three basic types of glial cell are found in the human retina, Muller cells, astroglia and microglia. All were described for the retina by Cajal more than one hundred years ago (1892).