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.
In the movie it was in the cascade mountains, Washington state. However it was CGI and the mountain was a set built on the tarmac at the Van Nuys, CA. It was a 100 foot square model x 35 feet high (wood & steel) built to get sky views. See Dante's Peak Suburban on FaceBook for pictures. In the movie it was in the cascade mountains, Washington state.