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Download Biological Psychology: The structure of the nervous system
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Biological Psychology: The structure of the nervous system The nervous system is a network of specialist cells capable of transmitting information around the body. How? Chemical signals are sent between neurons at structures called synapses, using chemicals called neurotransmitters. The nervous system is chiefly made of cells called neurons. Their structure and functioning allows them to send and receive messages. Electrical signals called action potentials can be sent from one end of a neuron to the other. Why? The nervous system helps to co-ordinate the activity in different systems of complex organisms like us. It allows us to detect what is happening in our environment and our own bodies, bring together and process information, and then ACT TO AFFECT WHAT HAPPENS NEXT. The nervous system is organised into divisions, each with its own specialised function The central nervous system processes information. It consists of the brain and the spinal cord. The peripheral nervous system carries information to and from the CNS. Two subdivisions. The somatic nervous system deals with the ‘outside world’, transmitting information from the sensory organs to the cns and from the cns to the skeletal muscles. The autonomic nervous system deals with the ‘inside world’, transmitting information to and from our internal organs. Aidan Sammons psychlotron.org.uk