• Save
Chapter 13 The Nervous System Lesson 2 - The Structure of Nerves
Upcoming SlideShare
Loading in...5
×
 

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

on

  • 4,282 views

 

Statistics

Views

Total Views
4,282
Views on SlideShare
4,281
Embed Views
1

Actions

Likes
7
Downloads
0
Comments
0

1 Embed 1

https://blackboard.watc.edu 1

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

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

  • Structure of nerves Coordination and response
  • Nerve tissue
    • Made up of neurones
    • Size and shape of neurones differ in different parts of the nervous system
    • Perform same function (transmit impulses)
    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 View slide
  • Activity : Labeling of neuron worksheet View slide
  •  
  •  
  • Function of neurones:
    • Receptors sense the environment (chemicals, light, sound, touch) and encode this information into electrochemical messages that are transmitted by sensory neurones
    • Sensory neurones carry signals from the outer parts of your body (periphery) into the central nervous system
    • Intermediate/relay neurones connect various neurones within the brain and spinal cord
    • Motor neurones carry signals from the central nervous system to the outer parts (muscles, skin, glands) of your body
  • 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
  •