But we can still answer my original question First I know that there are different kinds of neurons that vary in size and that some neurons can have a soma the big part that has the nucleus from which the dendrites extend spanning a millimeter in size Geniux Thus if you picked a random cubic millimeter of brain you could run right into the heart of a neuron and you would find very few connections Given this fact we can very easily answer this question with a resounding no however this seems like an unsatisfactory trite approach So I looked up some numbers on how many neurons are in the brain how many connections. http://www.guidemesupss.com/geniux-review