We are mindful of the Supreme Court's direction that a deficiency in either an informant's (1) veracity or reliability or (2) his or her basis of knowledge may be compensated for, in determining the overall reliability of a tip, by a strong showing as to the other, or by some other indicia of reliability.
Science Main Index. The meninges is a series of membranes that cover the central nervous system. The meninges consist of three layers: the dura mater, the arachnoid mater, and the pia mater. These layers cover the brain and spinal cord with the primary function of protecting and nourishing the central nervous system.eninges of the Brain. The meninges covers and protects the central nervous system including the brain and spinal cord. The meninges consist of three layers: the dura mater, the arachnoid mater, and the pia mater. The dura mater is the outermost of the three layers making up the meninges.
The outer layer of the meninges is called the dura mater or just the dura. The dura is tough and thick and it can restrict the movement of the brain within the skull. This protects the brain from movements that may stretch and break brain blood vessels. The middle layer of the meninges is called the arachnoid.The inner layer, the one closest to the brain, is called the pia mater or just the pia.his protects the brain from movements that may stretch and break brain blood vessels. The middle layer of the meninges is called the arachnoid. The inner layer, the one closest to the brain, is called the pia mater or just the pia.