Final answer:
The intermediate filaments found in nerve cell axons are called neurofilaments. They help maintain cell shape and structure and are composed of keratin, a protein also found in hair, skin, and nails.
Step-by-step explanation:
The intermediate filaments found in nerve cell axons are known as neurofilaments. They are a diverse group of cytoskeletal filaments that act as cables within the cell and help maintain cell shape and structure. Neurofilaments are composed of long fibrous subunits of a protein called keratin, which is also found in hair, skin, and nails.