PSY 105 Lecture Notes - Lecture 3: Neurotransmission, Reuptake, Central Nervous System
28 Mar 2018
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Document Summary
Unique shape compared to other cells (body and long tails with tendrils) 86 billion neurons with 160 billion connections. Cell body (soma) center of neuron; builds new cell components. Dendrites branchlike extensions that receive info from other neurons. Axons tails of the neuron that spread out from the cell body and transit info. Axon terminal: end of the axon containing synaptic vesicles filled with neurotransmitters (nts) Nts: chemical messengers that allow neuron to neuron synape. Synapse: space between neurons where nts travel. Cell in the nervous system that plays a role in the formation of myelin and the blood-brain barrier; responds to injury, removes debris, and enhances learning and memory. Control blood flow in brain: oligodendrocytes. Myelin sheath: glial cells wrapped around axons that act as of the neuron"s signal. Neurons respond to nts by generating electrical activity. Resting potential: when the neuron is not being stimulated, or inhibited.
