Myelinated nerve fibers occur predominantly in the cranial and spinal nerves and compose the white matter of the brain and spinal cord. It is the myelin sheath that gives the whitish color to the areas of white matter. Unmyelinated fibers are abundant in the autonomic nervous system. Patient discussion about myelin
The actress in the Progressive Insurance commercial is Stephanie Courtney. Her commercial name is Flo. Other roles in which Stephanie Courtney has appeared: Mad Men (Marge, a secretary) Blades of Glory (reporter) The Brothers Solomon (Sara)
That Girl in The Progressive Insurance Commercials. When it comes to great characters from famous television commercials, the most memorable appear no more: 1997 Taco Bell's talking Chihuahua (Â¡Yo Quiero Taco Bell!); 1989 LiteCall's Mrs. Fletcher (I've fallen and I can't get up); and 1984 Wendy's Clara Peller (Where's the beef?).