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.
Lithospheric Plates. The theory of plate tectonics states that the surface of the Earth is composed of a series of fractured plates. The fractured plates making up the crust of the Earth are called lithospheric plates . There are currently seven major lithospheric plates on the surface of the Earth.