CAS BI 315 Lecture Notes - Lecture 8: Electrochemical Gradient, Membrane Potential, Human Brain
6 Feb 2020
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Nervous system key physiological system that controls and integrates. Neuron nerve cells specialized for rapid pinpoint cell cell communication action potential f aenariqwhhfii. ie axon ellbody rewmpfcnee theurotransmitter. Neural computation depends on the pattern of neuronal connections and each neurons individual neural properties. Electrochemical gradients ions and charges across a membrane. Resistance how easily can flow charges move measured in amps measured in ohm"s. I current will flow faster bigger voltage slower bigger current. 2 differential permeability p of membrane to specific ions at rest sodium potassium pump across membrane conc gradients transporter important most ion. Kt concentration gradient is barely affected by movement of kt relative to a intral extracellular space is huge and full of ions. Doesn"t potential influx lot of ions to change membrane is ions take. Electrical gradient changes rapidly as kt ions move. Equilibrium potential of k ek no net movement of potassium.
