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.
1 Action Potential: sudden reversal of voltage along neuron membrane to cause depolarization (-70mV â +40mV). 2  Graded potentials: incoming stimulation not strong enough to complete depolarize a cell. 3  All-or-none law: neurons must fire at max intensities or not at all.