The brain is a complex organ made up of billions of cells known as neurons interconnected with single or multiple arms called synapses. These connections will exchange messages (electric signals) between multiple brain areas.
The cortex is the outermost layer of the brain and is divided into two cerebral hemispheres (right and left). Each one of the hemispheres are divided into four lobes: frontal, parietal, temporal and occipital. Their classification is related to different brain functions such as memory, speech, coordination, etc.
The two hemispheres are connected by a thick structure comprised of nerve fibers called the corpus callosum. This structure works like a bridge sending messages between both hemispheres and keeping proper communication between the different areas of the brain.
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