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5.1 stimuli and responses
What sensory organs do you know?
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Slide 1:
Carte mentale
Biologie
Middelbare school
vwo
Leerjaar 1
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What sensory organs do you know?
Slide 1 - Carte mentale
What senses do you know?
Slide 2 - Carte mentale
Slide 3 - Diapositive
Senses
Sight
Sense of hearing
Sense of balance
Sense of smell
Sense of taste
Sense of heat/cold
Sense of touch/pressure
Slide 4 - Diapositive
stimulus => response
stimulus = external or internal change
sensory receptors = convert stimuli into electrical signals
neurons = bring these signals to your brain (impulses)
effectors = are told how to react by your brain (via impulses through neurons) that's your
response
Slide 5 - Diapositive
Sensory organs/ receptor
Eyes
Ears
Tongue
Nose
Skin
Stimulus:
light
sound
taste
scents/odours
heat, cold, pressure, contact, pain
Slide 6 - Diapositive
Impulses
Impulses = signals in nerves/ neurons
Sensory organ --impulse (neuron) --> Brain
Once the impulses reach your brain, you become aware
Brain --impulse (neuron)--> Muscles
You can move and react to the stimuli
Slide 7 - Diapositive
Slide 8 - Diapositive
effectors
muscles (fast response)
glands => hormones (slow response, via the blood)
Slide 9 - Diapositive
1. What stimuli will your body experience in the situation described underneath?
2. How will the brains react to these stimuli?
You are using the stove, the pan has been on the stove for about 10 minutes. You touch the metal handle of the pan.
Slide 10 - Question ouverte
Give an example in your body of a stimulus and a response
For example: bell rings - get up from chair
Slide 11 - Question ouverte
Now give a complete example: stimulus-sensory receptor-neurons-effectors-response
Slide 12 - Question ouverte
responses
voluntary
=> you decide to react (skeletal muscle)
involuntary
=> you have no control over your reaction (smooth muscle that contracts, e.g. when you'r stomach starts to growl)
Slide 13 - Diapositive
Senses
Slide 14 - Diapositive
involuntary responses
Slide 15 - Carte mentale
What now?
First 15 minutes in silence (red). Then you can whisper to your classmate next to you (orange)
Read 118 + 119 tb
Write down the difficult words + bold pressed words and make a wordlist
Make exercise: 1, 2, 3
Slide 16 - Diapositive
difficult words
1 bombarded gebombardeerd
2 to convert omzetten
3 specialised gespecialiseerd
4 destination bestemming
Slide 17 - Diapositive
5.2 The senses
Slide 18 - Diapositive
senses
vision - light rays
hearing - sound waves
smell - chemicals
taste - chemicals
feeling (pressure, temperature, pain and touch) - heat/cold etc.
Slide 19 - Diapositive
difficult words
read the paragraph and write down 3 difficult words
We will choose 5 for your notebook
Slide 20 - Diapositive
five difficult words
1. detectors detector/sensor
2. pleasant nice / fijn
3. receptors receptor, reads a stimuli and changes it into an impulse (electrical signal)
4. corrresponding matching/ correspondeert/ past erbij
5. internal/external inside/outside
Slide 21 - Diapositive
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