PSY 105 Lecture Notes - Lecture 6: Skeletal Muscle, Amygdala, Axon Terminal
23 Sep 2016
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Depression: not getting enough nts to send that mechanism down. Glial cells: cell in the nervous system that players a role in the formation of myelin and the blood-brain barrier. 2 types in the nervous system (insulating against losing electric signal, protects you blood-brain barrier): astrocytes: Increases reliability of neuronal transmission (boosts the signal) One interacts with as many as 1million neurons (efficient: oligodendrocytes: Glial cells wrap around axons that act as insulators of the neuron"s. Neurons respond to nts by generating electrical activity. Usually sit with resting potential (when the neuron isn"t being stimulated or inhibited) Action potential: electrical impulse that travels down the axon (triggers release of nts when there"s enough: hits a certain point (enough of electrical impulse) and then release all at once. Think of it as lock and key - certain teeth that matches design of lock (specific key for opening up a specific lock)
