new psych 020 - chapter 3 web diagrams- (brain & nervous system 2007-2008

New psych 020 - chapter 3 web diagrams- (brain & nervous system 2007-2008

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CHAPTER 3 STRUCTURE OF THE NERVOUS SYSTEM    THE NERVOUS SYSTEM THE NEURON BRAIN ANATOMY ~ Professor Fazakas-DeHoog [email protected]
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STRUCTURE OF THE NERVOUS SYSTEM THE NERVOUS SYSTEM CENTRAL NERVOUS SYSTEM Brain Spinal Cord PERIPHERAL NERVOUS SYSTEM Afferent Pathways Efferent Pathways Somatic Division Autonomic Division Sympathetic Division Parasympathetic Division
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STRUCTURE OF THE NERVOUS SYSTEM NEURONS DEFINE & LABEL THE FOLLOWING: SOMA DENDRITES AXON SYNAPSE
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STRUCTURE OF THE NERVOUS SYSTEM NEURONS THE SYNAPSE TERMINAL BUTTON (AXON) POSTSYNAPTIC MEMBRANE (ON DENDRITE OF ANOTHER NEURON)
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MYELIN SHEATH NODES OF RANVIER NEURAL IMPULSE: ELECTROCHEMICALBEGINNINGS
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MULTIPLE SCLEROSIS Loss of myelination of neural pathways GREY MATTER - Unmyelinated WHITE MATTER - Myelinated The Cortex
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NEURAL IMPULSE: THE ACTION POTENTIAL
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-70 Membrane Potential (mV) Action Potential Threshold -55 Excitatory = depolarization Inhibitory = hyperpolarization Resting Potential
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THE NEURAL IMPULSE After an impulse passes any point on the axon, the membrane isn’t excitable & can’t fire an action potential. REFRACTORY PERIOD 1/1000 second
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Action Potential * Excitatory or Inhibitory SYNAPTIC TRANSMISSION HOW NEURONS COMMUNICATE
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LOCK & KEY NATURE OF NEUROTRANSMITTERS NEUROTRANSMITTERS
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THE SPINAL CORD Spinal Cord Brain Nerves CENTRAL NERVOUS SYSTEM BRAIN SPINAL CORD
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THE SPINAL CORD Duramatter Matter Spinal Flud Cross section of spinal cord
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THE HIERARCHICAL BRAIN
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THE HIERARCHICAL BRAIN   HINDBRAIN & MIDBRAIN HINDBRAIN & MIDBRAIN
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THE HIERARCHICAL BRAIN THE HINDBRAIN THE HINDBRAIN     - CEREBELLUM - CEREBELLUM  
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