At the level of the iliac tubercle, a bony prominence on the lateral aspect of the crest 5 cm posterior to the anterior superior iliac spine, the FL is preferentially thickened and this represents the origin of the ITB.
The highest layer of earths atmosphere is the exosphere. The inner core has the most or highest amount of density (iron/nickel). I think its the core of the Earth with highest temperature with  6000 degree Celsius. The crust is the layer of the Earth that has the the lowest density. It depends a bit on what you consider being a part.
Strato is Latin for layer, sheet.. The mesosphere is the center layer. Meso comes from mesos, which is Greek for middle, intermediate.. The thermosphere is the thickest layer, and includes most of what we call space. The Space Shuttle orbits in the thermosphere. Temperatures in this layer can be over 4000Â°F during the daytime.