What Establishes the RMP
{"Image DocumentName": "What Establishes the RMP?", "Image ImageDescription": "Diffusion of Na+ and K+ down their concentration gradients. Na+ diffuses into the cell and K+ diffuses out of the cell. BUT, membrane is 75x\u2019s more permeable to K+ than Na+ Thus, more K+ diffuses out than Na+ diffuses in. This increases the number of positive charges on the outside of the membrane relative to the inside. BUT, the Na+-K+ pump carries 3 Na+ out for every 2 K+ in. This is strange in that MORE K+ exited the cell than Na+ entered! Pumping more + charges out than in also increases the number of + changes on the outside of the membrane relative to the inside. AND presence of anionic proteins (A-) in the cytosol adds to the negativity of the cytosolic side of the membrane. THEREFORE, the inside of the membrane is measured at a -70 mV (1 mv = one-thousandth of a volt)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}