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.
Australian rocks and mountains Australia is a very flat continent where the average elevation is just 330 metres, the lowest in the world. What Australia lacks in height is more that made up for in the variety, geological age and unique appearance of its mountains and rocky outcrops - some of the oldest and most interesting exposed rocks in the world.