PSYC 3 Lecture Notes - Lecture 8: Fluid Compartments, Extracellular Fluid, Resting Potential

• School: Irvine Valley College
• Department: Psychology
• Course: PSYC 3
• Professor: mis

Document Summary

Abrupt depolarization of the membrane for very brief period of time that allows the neuron to communicate over long distances. The electrical charge across a cell membrane. Measured with respect to the outside of the cell. The membrane potential of a neuron at rest or when it is not being excited or inhibited by other inputs. A very fine electrode that can be used to electrically stimulate or record from. Triggers v-d sodium channels to open (see diagram under action potential) Reduction of the membrane potential fro its normal resting potential. Increase in the membrane potential relative to the normal resting potential. Voltage level that triggers an action potential. Movement of molecules from regions og high concentrations to regions of low concentration. Force of attraction or repulsion btwn ions. Membrane potential is produced by a balance btwn the forces of diffusion and electrostatic pressure. Ions in the extracellular and intracellular fluid.