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Chapter 13 The Nervous System Lesson 2 - The Structure of Nerves

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Structure of nerves Coordination and response
Nerve tissue ,[object Object],[object Object],[object Object],Structure of a nerve bundle
Axon terminals Myelin sheath Nodes of Ranvier Cell body Axon Nucleus Dendrites Section 35-2 A Neuron Structure of a neurone
Activity : Labeling of neuron worksheet
 
 
Function of neurones: ,[object Object],[object Object],[object Object],[object Object]
Sequence of neurones Receptors (sense organ) sensory neurone Intermediate/relay neurone motor neurone effector
- conducts impulses away from cell body - insulating layer - provides nourishment for fibre 5 - conducts impulses towards cell body 1 2 3 4 - speeds up transmission of impulses along fibre - junction between 2 neurones; impulses transmitted by chemical means (neurotransmitters) - where end branch of axon comes in contact with muscle fibre
What neuron is this? Motor neuron
Nerve Cells
Cross section of myelin sheaths that surround axons (TEM x191,175)
Activity : Labeling of neurones in the Human Nervous System worksheet 2
 

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Chapter 13 The Nervous System Lesson 2 - The Structure of Nerves

  • 1. Structure of nerves Coordination and response
  • 2.
  • 3. Axon terminals Myelin sheath Nodes of Ranvier Cell body Axon Nucleus Dendrites Section 35-2 A Neuron Structure of a neurone
  • 4. Activity : Labeling of neuron worksheet
  • 5.  
  • 6.  
  • 7.
  • 8. Sequence of neurones Receptors (sense organ) sensory neurone Intermediate/relay neurone motor neurone effector
  • 9. - conducts impulses away from cell body - insulating layer - provides nourishment for fibre 5 - conducts impulses towards cell body 1 2 3 4 - speeds up transmission of impulses along fibre - junction between 2 neurones; impulses transmitted by chemical means (neurotransmitters) - where end branch of axon comes in contact with muscle fibre
  • 10. What neuron is this? Motor neuron
  • 12. Cross section of myelin sheaths that surround axons (TEM x191,175)
  • 13. Activity : Labeling of neurones in the Human Nervous System worksheet 2
  • 14.