chapter3 - Psychology, Fifth Edition, James S. Nairne...

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Psychology, Fifth Edition, James S. Nairne Chapter 3 Chapter 3 Biological Processes
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Psychology, Fifth Edition, James S. Nairne Chapter 3 What’s It For? Biological Solutions Communicating internally Initiating and coordinating behavior Regulating growth and other internal functions Adapting and transmitting the genetic code
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Communicating Internally: Learning Goals 1. Describe the structure, type, and function of neurons. 2. Explain how neurons transmit information. 3. Discuss how neurons work together to communicate.
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Cells in the Nervous System Neurons -- receive, transmit, integrate information Sensory: messages to spinal cord, brain Interneurons: connect sensory, motor neurons Motor neurons: messages from spinal cord, brain Glial cells -- “support” cells Reflexes Processed in spinal cord, not brain
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Anatomy of a Neuron: Overview Dendrites Soma Axon Terminal buttons
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Psychology, Fifth Edition, James S. Nairne Chapter 3
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Dendrites Receive information 1000s of branches Enable receiving information from many sources
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Soma Main “body” of the cell Metabolic center Genetic material stored here Information is processed here
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Transmits information Action potential travels down the axon to other neurons Terminal buttons on end These release chemicals Axon
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Main Parts of the Neuron: A Review The three main parts of a neuron are highlighted in this video. Other parts described include the nucleus, nucleolus, and axon hillock. PLAY VIDEO
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Neural Transmission Synapse: Tiny gap between the terminal buttons of one neuron and the dendrite of the next one Chemicals flow into the synapse from the terminal buttons Neural transmission: Dendrites->Soma->Axon->Terminal Buttons
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Psychology, Fifth Edition, James S. Nairne Chapter 3 Resting Potential Tiny charge between inside, outside of neuron Created by electrically charged particles (ions) Some (sodium, chloride) concentrated outside cell Some concentrated (potassium) inside cell Maintained by sodium-potassium pump and selectively permeable cell membrane
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Psychology, Fifth Edition, James S. Nairne Chapter 3
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Psychology, Fifth Edition, James S. Nairne Chapter 3 The Action Potential Change in potential, primarily because of messages from other neurons
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This note was uploaded on 11/16/2010 for the course PSYCHOLOGY 101 taught by Professor Elizabethcollins during the Fall '09 term at Indiana.

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chapter3 - Psychology, Fifth Edition, James S. Nairne...

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