In the central nervous system, there are three different layers that cover the spinal cord and brain. These are called the meninges, and their three levels consist of the: pia, arachnoid, and dura mater. Bone is situated above these layers, followed by periosteum (a fibrous membrane that covers bone) and skin.The dura mater is the top layer of the meninges, lying beneath the bone tissue.This material at times opens into sinus cavities (spaces) located around the skull.he dura mater is the top layer of the meninges, lying beneath the bone tissue. This material at times opens into sinus cavities (spaces) located around the skull.
Planet Earth Making Mountains Planet Earth filmmakers came out in the rugged mountains of Nepal in hopes of filming the elusive snow leopard for the Mountains episode. 01:51.
Gold Diggers: The Secret of Bear Mountain. Gold Diggers: The Secret of Bear Mountain is a 1995 American adventure and drama film starring Christina Ricci and Anna Chlumsky. It takes place in the fictional town and county of Wheaton, Washington, chronicling the adventures of two girls, Beth and Jody, exploring caves beneath Bear Mountain. Contents.