The pleura is a thin membrane that lines the surface of the lungs and the inside of the chest wall outside the lungs. In pleural effusions, fluid builds up in the space between the layers of pleura.
Major Landform regions of Australia See also. The Australian continent is broadly divided into 4 major landform regions, each of which is comprised of smaller-scale constituent landform regions-eastern highlands, central lowlands, western plateau and the coastal plains.he lowest point on the Australian continent, Lake Eyre, is also situated in this region. It also includes inselbergs such as Uluru and Kata Tjuta. About 38 % of the Australian continent is less than 200 m above sea level (so far), much of it in the Central lowlands.
plain. large area of level or nearly level land. Elevated plains are called plateaus plateau,elevated, level or nearly level portion of the earth's surface, larger in summit area than a mountain and bounded on at least one side by steep slopes, occurring on land or in oceans......Click the link for more information.n land plains are classified as below sea level (for example, the Caspian Lowland); lowland plains, with elevations from sea level to 200 m (Western Siberian Plain); elevated plains, lying between 200 m and 500 m (Ustiurt); and highland plains, occurring above 500 m (interior of the Iranian Plateau).