Biological Psychology (MindTap Course List)
13th Edition
ISBN: 9781337408202
Author: James W. Kalat
Publisher: Cengage Learning
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Question
Chapter 1.2, Problem 3EIQ
Summary Introduction
Introduction:
The electrical gradient or polarization is the difference in the electric charge inside and outside the cell. Similarly, concentration gradient is the concentration of an ion inside and outside the cell. Electrical potential of a nerve cell is slightly negative (-70mV) inside the cell than the outside, due to the presence of negatively charged proteins inside the cell. Potassium is influenced by opposite forces of electrical gradient and concentration gradient. Internal negativity tends to pull potassium ions into the cell and concentration gradient tends to pump them out.
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