A mature osteocyte contains a single nucleus that is located toward the vascular side and has one or two nucleoli and a membrane. The cell also exhibits a reduced size endoplasmic reticulum, Golgi apparatus and mitochondria, and cell processes that radiate towards the mineralizing matrix.
The Paleolithic was the first era in human history. During it people lived as hunter-gatherers. It is when people learnt to make tools, to use fire, and to clothe themselves. The era produced some amazing artwork, the fabulous cave painting that have been found in Spain and in the Dordogne in southern France.
The Age of Exploration was one of the most important times in the history of world geography. A significant portion of the unknown world was mapped during this short period. Also, many advances were made in navigation and mapping which helped future explorers and travelers.he Age of Exploration was one of the most important times in the history of world geography. A significant portion of the unknown world was mapped during this short period. Also, many advances were made in navigation and mapping which helped future explorers and travelers.