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)
NO...this chick from the Christmas holidays commercial where she's hugging her husband after he bought her a new car but she stares in awe at another car driving past them...You guys seen it last winter all the time! She was black/lightskinned. THAT IS THE BADDEST FEMALE EVER IN A COMMERCIAL...I'll try to find the link.