The arachnoid is attached to the dura mater, while the pia mater is attached to the central nervous system tissue.
32.
When the dura mater and the arachnoid separate through injury or illness, the space between them is the subdural space.
33.
Most meningiomas grow from the arachnoid mater inward applying pressure on the pia mater and therefore the brain or spinal cord.
34.
In contact with the inner surface of the dura is another membrane called the arachnoid mater ( " arachnoid " ).
35.
In contact with the inner surface of the dura is another membrane called the arachnoid mater ( " arachnoid " ).
36.
Mammals ( as higher vertebrates ) retain the dura mater, and the secondary meninx divides into the arachnoid and pia mater.
37.
They are called ( from the outside to the inside ) the dura mater, the arachnoid mater and the pia mater.
38.
They are differentiated from other meningeal and arachnoid cysts because they are innervated and diagnosis can in cases be demonstrated with subarachnoid communication.
39.
As arachnoid cysts tend to increase in size very slowly, they do not cause acute elevation of the ICP and its symptoms.
40.
The shape of the arachnoid does not follow the convolutions of the surface of the brain and so looks like a loosely fitting sac.
