CH 2 Brain behav king

CH 2 Brain behav king - 1 CHAPTER 2 Brain and Behavior...

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CHAPTER 2 Brain and Behavior OUTLINE Characteristics of the nervous system What is the basic unit of Nervous System? What is a neuron? How Neurons Communicate? Chemical Messengers in the Nervous System Divisions of Nervous System Central Nervous System A Tour of the brain Lower-level brain structures The cerebral cortex PERIPHERAL NERVOUS SYSTEM The knowledge of Biological bases of human behavior is essentially important to study in Psychology. Nervous System is not only important for survival, it affects emotions, thinking, memory and other mental processes as well as behavior. So, before becoming a Psychologist and treating Psychological diseases and abnormal behavior it is important to study Nervous system which is the basic unit of biological foundation. This system receives the messages from the outside world through eyes, ears, and other sensory receptors then organizes the message, decides what to do with the message and then sends the message to appropriate centers of the brain and the motor organs. The nervous system is the electrochemical communication circuitry in our body. The nervous system is made of billions of nerve cells, which communicate with many other nerve cells in our body helping to process the information from outside world as well as within the body. So, basically nervous system is a network system in our body. The characteristics of the Nervous system 1
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There are several characteristics of the nervous system, which help us survive and function in the environment to be able to adjust and meet the challenges of the environment. Those characteristics of the nervous system are as follows: Complexity We engage in numerous activities at the same time. We are able to perform all of those activities in organized, well balanced manner, because we have a very complex nervous system consisting of billions of neurons, communicating with each other simultaneously. Integration The brain and the nervous system have many levels and aspects of connection. The nervous system is able to connect with various levels and divisions. This is the way nervous system integrates various types of information received by the brain and respond appropriately to sources of those information. Adaptability The environment constantly changes. To survive, we need to be able to adapt to those changes. The brain has the plasticity which enables us to adjust to the changes of the environment. Although our brain consists of many components inherited from our ancestors, those parts and components are elastic to adapt to change or meet the changing environmental demands. Electrochemical Transmission The nervous system is a network system which communicates with different parts of the system. How does it communicate with each other? The nervous system communicates with each other generating electrical impulses and chemical discharges or transmissions. What is the basic unit of Nervous System?
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This note was uploaded on 10/20/2010 for the course PSYCH 101 taught by Professor Wyllie during the Fall '08 term at Delgado CC.

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CH 2 Brain behav king - 1 CHAPTER 2 Brain and Behavior...

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