Almost all neurons, however, have three basic components: a cell body, an axon, and dendrites.
The size, shape, and structure of neurons vary based on their function and location. Even if they are dead, they can’t be replaced. Neurons do not replicate or renew like other cells. The human brain contains an estimated 100 billion neurons at birth. Neurons can also get these signals through root-like extensions called dendride, which allow them to get them. They look and work differently from other types of cells, but neurons have a lot in common.Īxons are special extensions of neurons that allow them to send electrical and chemical signals to other cells. Neurons, which are also called nerve cells, send and receive signals from your brain.
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