The real work of your brain goes on in individual cells. An adult brain contains about
100 billion nerve
cells, or neurons, with branches that connect at more
than 100 trillion points. Scientists call this dense, branching
network a "neuron forest."
Signals
traveling through the neuron forest form the
basis of memories, thoughts, and feelings.
Neurons
are
the chief type of cell destroyed by Alzheimer's disease.
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