The outermost layer of the meninges, the dura mater, is closely associated with the arachnoid mater which in turn is loosely connected to the innermost layer, the pia mater.
12.
It is occupied by spongy tissue consisting of trabeculae ( delicate connective tissue filaments that extend from the arachnoid mater and blend into the pia mater ) and intercommunicating channels in which the cerebrospinal fluid is contained.
13.
Although the name implies that it is a copy of the once living brain, endocasts rarely exhibit convolutions due to buffering by the pia mater, arachnoid mater, and dura mater that once surrounded and protected the brain tissue.
14.
:: The reference is to the arachnoid mater, a thin and spiderweb-like layer of tissue that encloses the brain and spinal cord, between the dura mater and pia mater . talk ) 22 : 09, 29 August 2013 ( UTC)
15.
The potentials occur primarily in cortical pyramidal cells, and thus must be conducted through several layers of the cerebral cortex, cerebrospinal fluid ( CSF ), pia mater, and arachnoid mater before reaching subdural recording electrodes placed just below the dura mater ( outer cranial membrane ).
16.
The arachnoid mater covering the brain is referred to as the " arachnoidea encephali, " and the portion covering the spinal cord as the " arachnoidea spinalis . " The arachnoid and pia mater are sometimes considered as a single structure, the leptomeninx, or the plural version, leptomeninges . ( " Lepto "-from the Greek root meaning " thin " ).
17.
Within a few weeks the doctor at UCLA, Neil Martin, called to say he had consulted with some of the top neurosurgeons in the USA and they had come to the conclusion that the cyst was not on his brain, but in a space between the brain and the skull called the arachnoid mater and that he saw no reason for him to give up his boxing career.
