§3.4 The nervous system [Topic 3 - organizing the world]- Year 2

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- TB p. 134
- notebook
- this lessonup
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ScienceMiddelbare schoolhavo, vwoLeerjaar 2

Cette leçon contient 33 diapositives, avec quiz interactifs, diapositives de texte et 2 vidéos.

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Get ready
- TB p. 134
- notebook
- this lessonup

Slide 1 - Diapositive

Topic 3
ORGANIZING THE WORLD

Slide 2 - Diapositive

§3.4 The Nervous system
p. 134-135

Slide 3 - Diapositive

§3.4  - Learning goals
I can....
  • explain the function of the nervous system
  • describe the components of the central nervous system 
  • explain the process wherein the nervous system detects information from the environment and reacts to it
  • describe the functions of the three different types of
neurons 

p. 134-135

Slide 4 - Diapositive

§3.4  - Key words
  • Nervous system
  • Brain
  • Spinal cord
  • Central Nervous system
  • Peripheral nervous system
  • Stimulus
  • Receptor cells
  • Impulse 
p. 134-135
  • Coordinator
  • Effector 
  • Response 
  • Neurons
  • Sensory neurons
  • Inter(mediate) neurons
  • Motor neurones 

Slide 5 - Diapositive

§3.4  - Your nervous system
Your nervous system is your bodies fast communication system:
  • Your Central nervous system (control system, CNS)
  • Your Peripheral nervous system (routers, PNS)


p. 134-135

Slide 6 - Diapositive

§3.4  - Signals
When your body observes stimuli from it's environment, the following cycle happens:
  • PNS - Your body receives a stimuli (senses)
  • CNS - Your brain/spinal cord coordinates a response.
  • PNS - Muscles / glands create a response


p. 134-135

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Just wonder yourself how beautiful nature works: Nerves and neurons

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spinal cord - grey and white matter

Slide 12 - Diapositive

How does the nervous system work?
Sensory cells (receptor) receive stimulus from
                               outside (for example chocolate)
   sensory neurons                                                                                                                                      = impulses     interneurons ( spinal cord)   

             brain    

    interneurons ( spinal cord)             

    motor neurons            muscles (effector)

Slide 13 - Diapositive

Responding to a stimulus
1. Receptor
->
Sensory cells in sense organ
2. Sensory neuron
->
Gathers and sends impulses from the senses
3. Inter neuron
    (Spinal cord)
->
Communicates between the different parts of the CNS
4. Brain 
5. Inter neuron
    (Spinal cord)
6. Motor neuron
->
sends impulses to effector cells 
7. Effector
->
muscles or glands

Slide 14 - Diapositive

You get an itch in your elbow. What is the stimulus in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow

Slide 15 - Quiz

You get an itch in your elbow. What is the response in this reaction?
A
Receptors in your skin
B
The itch itself
C
muscles that move your arm to scratch
D
The brain that decides to scratch the elbow

Slide 16 - Quiz

Which will send an impulse along sensory neurons?
A
Receptors in your skin
B
The spinal cord
C
The muscles in your arm
D
The brain

Slide 17 - Quiz

Which will receive an impulse by motor neurons?
A
Receptors in your skin
B
The spinal cord
C
The muscles in your arm
D
The brain

Slide 18 - Quiz

Sensory neurons carry information


A
away from the brain.
B
both to and from the brain.
C
towards the brain.
D
within the brain

Slide 19 - Quiz

Motor Neuron
Inter neuron
Sensory neuron
Found in visual system, brain, and spinal cord, pass information on
carry electrical impulses away from the brain and spinal cord
Take information from sense organs to the brain and spinal cord

Slide 20 - Question de remorquage

Normal situation
In a soccer match a player kicks the ball to the goal.
The goal keeper sees the ball and he jumps and catches it.

Describe the pathway in the goal keeper's nervous system.

Slide 21 - Diapositive

Describe the pathway in the goal keeper's nervous system.

Slide 22 - Question ouverte

First:
Light from the ball –> 
sensory receptors of the eye –>  
impulses by sensory neurones –> 
impulses by interneurons in spinal cord + brain stem –> 
brain (vision area).

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Now the keeper is aware of the ball
Now the keeper is aware of the ball 😜

Slide 24 - Diapositive

After that:
Brain (motor area) creates impulses -> 
impulses by interneurons in brain stem + spinal cord –> impulses by motor neurons –> 
muscles in legs and arms

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Now the keeper jumps and catches the ball!

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Slide 27 - Vidéo

Slide 28 - Vidéo

§3.4  - Neurones - Wires
Our body has 3 types of neurones:
  • sensory neurones              - connects senses to the CNS
  • inter(mediate) neurones - the neurones within the CNS
  • motor neurones.                 - connects the CNS to the effectors


p. 134-135

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GET READY
ONLY YOUR MACBOOK:

KWIZL - ET_Y2_3.4

Slide 31 - Diapositive

ET_Y2_3.4
Do the quiz.
Check another quiz and give feedback.
Reflect upon your own work.
(write this down in your notebook)
timer
15:00

Slide 32 - Diapositive

HW for next time:
To be done before class:

Complete the exercise of Topic 3.4 (p.136-141)
Read Topic 3.5 (p.142-143)
Study the glossary of Topic 3.5 on Studygo.

BE PREPRARED FOR AN ENTRY TICKET
p. 134-141

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