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.
Dr. Jeff Young, of the new hit show Dr. Jeff: Rocky Mountain Vet, will premiere tonight on Animal Planet. Animal Planet is one of the leading television stations that continuously provides excellent programming related to animals, such as the recently aired show Cannibal In The Jungle.nimal Planet fans will get to see the long-haired vet work his magic on the animals. Some of the scenes on the new Animal Planet reality show will be graphic and gruesome as they show animals that are suffering a great deal from wounds and illness.