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.
If you're talking about the entire planet together, then of all the planets in our solar system, earth is the most dense. Rock planets are obviosly denser than gas giants, and the largest rock planet is earth, making it have the most gravity, which causes it to be the most condensed and have the highest density. The Earth is the densest planet in the Solar System overall. It has a density of about 5.515 times that of water. However, it is only the densest because it is made of rocky material AND massive enough for that material to be compressed more under its own gravity and internal pressure. If it were not for gravitational compression, Mercury would actually be denser than the Earth.