I tried to do some research - starting with a Google search for "typical axonal trees" - and found the following pictures: source source (axons are red) but didn't find concise answers to the following questions: How many end segments does the axon of typical cortical pyramidal cell typi...

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: How many (in relative terms) branches terminate and how many axon terminals (synapses) are there in the different target regions of a typical cort...

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: How many axon branches reenter the cortex shortly after having left the gray matter into the white matter? (This is not visible from the pictures ...

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: Are there axon branches that go up to cortex layer 1 and spread there? (This is not indicated in the pictures above, maybe because there are no.)

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: Is it possibly true that the "inner cortical" axon branches (i.e. those that don't leave the gray matter) are not myelinated? (The first picture se...

Axons enter layer 1 somehow vertically from below (from pyramidal cells just below, from subcortical or other distant regions of the cortex, crossing the gray matter of the neocortex in its entirety), and they leave (by branching) layer 1 somehow vertically to project to cortical neurons in lowe...