PSYC 106 Lecture 3: 01.17.19
Document Summary
Control (open/close) of ion channels: volage (membrane potential gated, neurotransmitter - gated (nt, stimulus: light, sound, or touch. Nt binds to receptors on neuron dendrites. Neurotransmitter - gated channels are na+ channels. Depolarization which opens voltage gated na+ channels . If depolarization to -55 mv action potential. Releases nt at axon terminals into synapse. Serotonin: get from tryptophan (amino acid) in diet. Synthesis of neurotransmitter in body of a neuron. Opens up calcium channels releases neurotransmitter. Fuses with membrane spills into the synapse. Neurotransmitter binds to receptor on postsynaptic neuron. As neurotransmitter to signal clap needs to stop so neurotransmitter. The nt needs to go away has to be released. Nt is re-absorbed by the presynaptic terminals to be used again later. Nt is altered in synapse to be inactive. Ach acetate + choline choline reabsorbed and added to acetate. Nt will float away eventually and get absorbed by glial cells. Nt binds to receptors open fairly specific ion channels.
