The brain and
spinal cord together form the
central nervous system (CNS).
Components
Microscopic structure
Cognition and memory rely on neurons (nerve cells) and the synapses
(connections) between them. The genetic (the combination of genes in the
DNA) and epigenetic (the regulation of which genes are active or
inactive) mechanisms in each neurone regulate its behaviour. On top of
this we have the global features of the brain such as the number of
neurons, the number of glial cells (support cells), and the relationship
between neurons. Every brain has a unique "network" or "web" of
neuronal connections. Your memories, your skills, your behaviours, your
processing patterns, are the gross product of information stored in the
DNA of each microscopic neurone, and in the macroscopic network of the
brain.
Pathology
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