subarachnoid space lies between the arachnoid mater and pia mater and is filled with cerebrospinal fluid.
subarachnoid space lies between the arachnoid mater and pia mater and is filled with cerebrospinal fluid.
lies between the arachnoid mater and pia mater and is filled with cerebrospinal fluid?
subarachnoid space
the meninges comprise three membranes that, together with the cerebrospinal fluid, enclose and protect the brain and spinal cord (the central nervous system). the pia mater is a very delicate impermeable membrane that firmly adheres to the surface of the brain, following all the minor contours. the arachnoid mater (so named because of its spider-web-like appearance) is a loosely fitting sac on top of the pia mater. the subarachnoid space separates the arachnoid and pia mater membranes and is filled with cerebrospinal fluid. the outermost membrane, the dura mater, is a thick durable membrane, which is attached to both the arachnoid membrane and the skull.
meningitis
cerebrospinal fluid is a transparent, colourless fluid and it is produced at about 500 ml/day. its electrolyte levels, glucose levels, and ph are very similar to those in plasma, but the presence of blood in cerebrospinal fluid is always abnormal.









































section::::etymology.









































the arachnoid mater is named after the greek word "arachne" ("spider"), the suffix "-oid" ("in the image of"), and the latin word "mater"("mother"), because of the fine spider web-like appearance of the delicate fibres of the arachnoid which extend down through the subarachnoid space and attach to the pia mater.









































section::::additional images.
arachnoid mater