Part of the Arabian Desert, the Rub al-Khali, meaning âempty quarterâ in Arabic, is the largest region of continuous sand in the world, and the driest. It lies in a structural basin and stretches across an area of roughly 250,000 square miles (650,000 square kilometers.)
How do ciliates move?   Answer   Ciliates, a unicellular protozoa, use their cilia, tiny hair-like organelles, to move around. What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called? Ependymal cells are cells that line the central cavities of the brain and spinal cord. They are ciliated and act as a semi-permeable lining between the cavities and normal tisâ¦sue.
The function of cilia is to move water relative to the cell in a regular movement of the cilia. This process can either result in the cell moving through the water, typical for many single-celled organisms, or in moving water and its contents across the surface of the cell.or example, in humans, only a few cell types have motile cilia, namely sperm, epithelia cells in the bronchi and oviducts, and ependymal cells that line brain vesicles. But virtually all other cells have a primary cilium.