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.
(3a) the initial depolarization of the outer cell membrane is transmitted along the length of the cell and throughout the cell interior via a T-tubule system. (3b) meanwhile the sodium (Na+) channels are closing and the sodium-potassium ATPase pumps are continuing to operate.