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Meninges of Brain:
Brain and spinal cord are surrounded by three membranous connective tissue layers called the meninges, which include the following (Fig):
Dura mater
Arachnoid mater
Pia mater
Dura mater of Meninges:
Dura mater is thick outermost meningeal layer that is richly innervate by sensory nerve fibers.
Arachnoid mater of Meninges:
Arachnoid mater is fine, weblike avascular membrane directly beneath the dural surface; the space between the arachnoid and the underlying pia is call the subarachnoid space and contains cerebrospinal fluid, which bathes and protects the central nervous system (CNS).
Pia mater of Meninges:
Pia mater is delicate membrane of connective tissue that intimately envelops the brain and spinal cord. ]]>
