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Unformatted text preview: 1-26-10 How Neurons Communicate with Each Other: Part OneWhat makes neurons special?I.Appearance (morphology)A. Neuron cell body (soma)II. Ability to communicate with each otherNeurons Look different from Other Cells1. Structural characteristics(a) Dendrites: i.Sites of incoming information. ii. Spinesiii. More surface area = more information received.(b) Axons:i.One per neuron (and only one!)ii. May be a meter or more in lengthiii. Myelin sheath (oligodendrocytes): speed up informationiv. Processes2. Types of neurons(a) motor neuronsi.run from spinal cord to muscleii. multipolar(b) sensory neurons (one way, from senses to the brain.)i.dendrites are sensory receptorsii. bring sensory information to brainiii. bipolar(c) interneuronsi.entire neuron is contained within a single brain region (ex=spinal cord)Neurons Communicate with Each OtherElectrical: Neuronal ConductionChemical: Synaptic TransmissionSynapse: space between two neurons•Presynaptic neuron: cell that sends signal•Postsynaptic neuron: receiver of the signal...
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This note was uploaded on 06/29/2011 for the course PSYCH 3341 taught by Professor Leighleasure during the Spring '10 term at University of Houston.
- Spring '10