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BS 5.4 - The nervous system
5.4 - The nervous system
What's the plan today?
Structure of the nervous system
How the nervous system works
Nerve cells
Pathways taken by nerve impulses
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5.4 - The nervous system
What's the plan today?
Structure of the nervous system
How the nervous system works
Nerve cells
Pathways taken by nerve impulses
Slide 1 - Tekstslide
Structure of the nervous system
Notes:
1. Central nervous system (CNS) = Brain and spinal cord
2. Nerves
Slide 2 - Tekstslide
How does the nervous system work?
Notes:
Sensory cell receive stimulus from outside (ex. chocolate
Sensory cells = impulses nerves
brain
muscles
Slide 3 - Tekstslide
Structure of the nerve cell
Notes:
1. Cell body - located near the CNS
2. Axon - conducts impulses to and from cell body
Slide 4 - Tekstslide
What is a nerve?
Notes:
nerve = a bundle of axons of nerve cells surrounded by a tough, protective layer
Slide 5 - Tekstslide
Path taken by nerve impulses
notes:
2 types of pathways
1. Conscious reaction - voluntary response, ex: girl and chocolate
2. Reflex - involuntary response, impulse does not go to the brain but stays
within
the CNS
ex. withdrawal reflex = hand touches fire
Slide 6 - Tekstslide
Slide 7 - Video
Do assignment 2, 3, 6, 7, 8
Slide 8 - Tekstslide
Slide 9 - Tekstslide
nervous system
Slide 10 - Woordweb
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