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.
Video: North American Plate: Tectonics, Movement & Facts Learn about the North American Plate and how it is moving relative to other tectonic plates. In this lesson, we will explore the three major types of plate boundaries that you will find at the North American Plate's edge.