Intermediate filaments and microtubules

In neurons, intermediate filaments are called neurofilaments (red arrows).  These filaments are rigid and very stable, providing support, particularly in longer, larger axons.  Intermediate filaments are also present in supporting astrocytic glial cells; a group of these filaments is outlined in blue.  These filaments, called glial filaments, also provide support.

This electron micrograph shows myelinated axons cut in cross section.  The hollow microtubules and the intermediate filaments are especially prominent in axons, where they provide intracellular transport and support, respectively.  In nerve cells, intermediate filaments are called neurofilaments.  Intermediate filaments in a non-neuronal cells are also visible.  Brain 50,000x

This electron micrograph shows myelinated axons cut in cross section.  The hollow microtubules and the intermediate filaments are especially prominent in axons, where they provide intracellular transport and support, respectively.  In nerve cells, intermediate filaments are called neurofilaments.  Intermediate filaments in a non-neuronal cells are also visible.  Brain 50,000x

This electron micrograph shows myelinated axons cut in cross section.  The hollow microtubules and the intermediate filaments are especially prominent in axons, where they provide intracellular transport and support, respectively.  In nerve cells, intermediate filaments are called neurofilaments.  Intermediate filaments in a non-neuronal cells are also visible.  Brain 50,000x

This electron micrograph shows myelinated axons cut in cross section.  The hollow microtubules and the intermediate filaments are especially prominent in axons, where they provide intracellular transport and support, respectively.  In nerve cells, intermediate filaments are called neurofilaments.  Intermediate filaments in a non-neuronal cells are also visible.  Brain 50,000x