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.
Nerve cells in the nervous system send signals called action potentials, during which the soma, or cell body of the neuron, sends an electrical signal down the axon. When not signaling, a neuron is hyperpolarized, meaning it has a negative charge when compared to the outside.