Neurons and Signals · Brain
A cell shaped entirely around receiving, deciding and sending.
A neuron looks like a tree that grew a very long root. Branches at one end collect incoming signals, the cell body adds them up, and a single long fibre carries the result away to the next cells.
Those branches are dendrites, the long fibre is the axon, and one neuron can receive from thousands of others at once. It's constantly summing all that input, and if the total crosses a threshold, it fires. If it doesn't, nothing happens at all.
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