PHS 3341 Lecture Notes - Lecture 3: Force Concentration, 5-Ht Receptor, Excitatory Synapse
Document Summary
Calculate the equilibrium potential using the nerst equation. Permeability allows the ion to flow across and be driven to its own membrane potential. Potassium has the greatest impact on the membrane potential at rest. Permeability says how many channels are open. Do not memorize the equation but know that you can use this and the parts of it. Higher potassium on the inside than outside. Potassium current and it will have a greater affect on the membrane potential. Sodium-potassium atpase gives us the concentration gradient that is its main role. What happens if you give a drug that inhibits all these carriers (poison them) Ions going through the channels and the activity of the pump balance each other out giving us a steady membrane potential. What happens when we open and close channels to the rest of the membrane. Resting membrane potential means it has charge polarization. 70 towards the polarized state it becomes depolarized.
