BIO 282 Lecture Notes - Lecture 21: Action Potential, Axon Hillock, Dendrotoxin
Document Summary
Integrates incoming signals and generates outgoing electrical signal to axon. Passes chemical signals to dendrites of another cell or to an. Describe what channels open/close during and ap. Explain, using concepts of equilibrium potentials and the nernst equation, why the permeability and equilibrium potential of ions explains the changes in vm that occur during and ap. Predict how a disrupt can affect signaling and physiology, on a molecular level to the organismal level. Key point: neurons and muscle cells are excitable! This means they are subject to transient changes in membrane permeability and thus membrane potential and can fire action potentials. Key point short period of time: action potentials (ap) are large changes in the vm of a neuron that last for a. There were 5 attempts that were made to stimulate an action potential to fire. Only attempt 4 and 5 actually sent off a membrane potential.
