BIO 208 Lecture Notes - Lecture 7: Sodium-Potassium Alloy, Extracellular Fluid, Resting Potential
Document Summary
Monitor internal and external environment coordinate voluntary and involuntary responses. This is referred to as intrinsic regulation. Changes in the electrical charges between the inside of the cell and extracellular fluid. Cell experiences a loss of positive ions due to concentration gradients. Cannot get rid of the high concentration of negatively charged proteins. Anything that changes the permeability of a membrane to na or k. Anything that opens or closed the ion channel. Anything that changes or affects the na/k ion pump that is bailing out the cell. Changes in vm changes the cell"s functions. Vm exits due to differences in membrane permeability to different ions. Changes in vm are a result of changes to the membrane permeability in connection to those ions. Changes are caused by the opening/closing of ion channels, or changes in concentration gradients. Resting potentials are maintained by ion pumps and leak channels. A shift in the vm towards a more positive charge.
