BIOL 1107 Lecture Notes - Voltage-Gated Potassium Channel, Chemical Synapse, Saltatory Conduction
Document Summary
Identify how the electrical events of an action potential give rise to synaptic neurotransmission. Be able to explain how epsps and ipsis sum within a neuron and affect membrane potential. Action potential has to arrive at axon terminal. Recall the events leading up to and within an action potential. Opening of voltage gated na+ channels at threshold. Action potential will propagate and arrive at axon terminal (aka synaptic bouton) Remember what we"re trying to understand here how do we end up with the action potential turning into a signal that goes to other cells. If the neurotransmitter released by the pre-synaptic neuron depolarizes the post-synaptic neuron If the neurotransmitter released by the pre-synaptic neuron hyperpolarizes the post synaptic neuron . Space and time influence how epsps and ipsps affect membrane potential. Was it an epsp or an ipsp. Where on the neuron did the "hit" happen. Inputs closer to the axon have a bigger effect on voltage-gated na+ channels.
