Ground-Glass Nodules: If Growing, Assume Cancer. Blair Westerly, MD. The more CT scans that are performed, the more ground-glass opacities (GGOâs) are seen and what to do with these abnormalities can be difficult to ascertain for clinicians.
the process of reversing the charge across a cell membrane (usually a NEURON), so causing an ACTION POTENTIAL. In depolarization, the inside of the membrane, which is normally negatively charged, becomes positive and the outside negative.
This is caused by a rapid but transient change in the permeability of the cell membrane to both sodium and potassium ions. Depolarization is caused by a rapid influx of sodium ions into the nerve cell which disrupts the charge gradient across the membrane.