Namenda XR. Uses. Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease. It does not cure Alzheimer's disease, but it may improve memory, awareness, and the ability to perform daily functions.
The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken up into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates.
The red arrows show the direction of drift at the plate boundaries. (N.B. The fact that large portions of the ocean floor, as well as continental expanses, seem to be solid plates has tended to discredit the term - continental drift - and to establish the alternative term - plate tectonics. The three main Tectonic Plates boundary types. The tendency for volcanoes to erupt and for earthquakes to impact in various parts of the world seems to relate directly to the existence of underlying tectonic plates and the type of plate movements:-.