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.
The largest plains on dry land are the Great and Central plains in North America, the Amazon and Guyana lowlands in South America, the East European Plain in Europe, the Western Siberian, North China, and Indo-Gangetic plains in Asia, the Sahara and Sudan plains in Africa, and the Central Lowlands in Australia.lains occupy the largest part of the earthâs surface. The basins of the greatest rivers and the largest lakes are located on plains, and in terms of terrain plains are the most suitable areas for human habitation.