nerve net

Home » nerve net

What are neurons? Nervous system evolution and biology

By |2017-05-27T15:24:43+00:00May 27th, 2017|Biology|

A network of neurons One-celled creatures like bacteria don't have neurons, because they can communicate within themselves through the use of enzymes, but all multicellular animals do have neurons. The simplest and earliest example of neurons is in hydras, which evolved around 600 million years ago. In hydras, neurons are not organized into [...]