In the case of unmyelinated axons, the nerve impulse, or action potential, moves along the axon continuously. By contrast, in myelinated nerve fiber, currents can only occur where the axonal ...

The axon caliber (diameter) in mammalian PNS ranges from 0.1 μm to 20 μm, with unmyelinated axons being less than 2 μm and myelinated axons being more than 1–2 μm in diameter.

Their findings, published in Nature Neuroscience, contrast with the classical view of tubular axons. 2 The researchers propose that this shape is a ubiquitous feature in all unmyelinated axons; ...

Axons are the processes that extend from neuronal cell bodies, carrying signals between those bodies. In the grey matter, these axons are mainly unmyelinated, meaning they are not covered by a ...

Progesterone-treated animals showed a higher fraction of unmyelinated axons (9.0 ± 2.8%; n = 4) when compared with the onapristone (5.0 ± 1.5%; n = 5) or vehicle (5.9 ± 2.7%; n = 6; Fig. 3a ...

Axons are the long cable-like arms of nerve cellsthat send messages to other cells. The construction of myelin sheathhas been called one of the most beautiful examples of cellspecialization in nature.