PSY100H1 Lecture Notes - Beta Blocker, Neurotransmitter Receptor, Myelin

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: Ashley Waggoner Denton

Document Summary

Bipolar, unipolar, interneuron, dendrites, terminal buttons, synapse, axon, myelin sheath (glial cells), nodes of ranvier, cell body, action potential, re-uptake. Inhibitory signals - hyperpolarize neurons to decrease likely hood of neuron firing. All or none principal - neurons either fire or don"t fire; do not partially fire. Within axon membrane k+ and na+ are limited to movement in/out cell through respective channels; sodium is exchanged 3:2, k+ channel is free; creating polarization and depolarization. Reuptake - reabsorption of left over neurotransmitter. Neurotransmitter carry signals between neurons; stored in vesicles (microtubules) and fuse to presynaptic membranes; release contents into synapse and are then received by post synaptic neurons. Neurotransmitters - acetylcholine -responsible for motor control between muscles and nerves , epinephrine -adrenaline, norepinephrine - arousal/alertness, serotonin - emotional states, happiness and depression,, dopamine - reward/motivation/ pleasurable feelings, Gaba - major inhibitor glutamate - major excitatory.