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.
â¢ The voltage-gated potassium channels respond slowly to depolarization. about the time that the action potential reaches its peak. â¢ You've seen that potassium moves out of the cell as voltage-gated potassium channels open. potassium moves out, depolarization ends, and the positive feedback loop is broken.