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Brain in Two Parts 9-16-10 - The Brain in Two Parts How it...

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The Brain in Two Parts: How it Works and What it Does
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The Nervous System The Body’s electrochemical communication system Divided into two parts: The Central Nervous System and the Peripheral Nervous System
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The Central Nervous System Made up of of the brain and the spinal chord 99 % of neurons are located in the CNS Functions include: receiving, processing, and storing incoming information; sends out messages to muscles, glands, and internal organs The central command system which controls thought and movement Controls everything
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The Peripheral Nervous System Nervous system outside the brain and spinal cord which handles input and output of the CNS Connects the brain and spinal cord to the other areas of the body
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Neurons Individual Cells which receive, integrate and transmit information Sensory or Afferent Neurons: carry information to the brain from the skin, muscles or organs Senses something and send that info to the brain Motor or Efferent Neurons: carry the brains output to muscles, glands, and organs Sensory neurons tells brains stove is hot, and the brian gets motor neurons to make you to move
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Mirror Neurons: neurons which are activated by performing an action or by seeing another perform the same action may play a role in developing new motor skills Empathy and language (partly based on imitation) Dysfunction linked to autistic spectrum disorders Help us to understand the perspective of another person They fire when we think about moving or see someone else move Distributed to places of the brain of social perspective Help us to fit into a social group To control it made to do the computer game with brain
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How it All Works: Neurons in Action Neurons are the nerve cells which communicate to, from or inside the CNS Glial cells: hold the neurons in place. Nourish and insulate neurons. Non-neuron cells which provide a supportive function.
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The Structure of A Neuron Dendrites (branches): receive messages from other neurons, transmit to the cell body
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