Which of the following statements is (are) TRUE? 
Definitions:
Pia Mater
The delicate innermost layer of the meninges, the membranes that envelop the brain and spinal cord, providing a protective covering.
Gray Matter
Regions in the brain and spinal cord composed primarily of neuronal cell bodies, dendrites, and glia, playing a key role in processing and regulating neural signals.
Cerebrum
The largest part of the brain, encompassing the cerebral hemispheres, responsible for complex cognitive functions, including learning, memory, and voluntary movement.
BioPac
A brand known for developing biophysical research and education equipment, typically used for measuring physiological signals.
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