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C Touch, smell, taste
Today
Check what you remember from last week
Reflexes
Homework check - finish part A and B
Time to work on assignments
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Slide 1:
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Biologie
Middelbare school
vwo
Leerjaar 1
This lesson contains
21 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
80 min
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Items in this lesson
Today
Check what you remember from last week
Reflexes
Homework check - finish part A and B
Time to work on assignments
Slide 1 - Slide
Sense organs send signals through the nerves to the ...
A
eyes
B
ears
C
brain
D
muscles
Slide 2 - Quiz
Match the correct adequate stimulus to the sensory organ
Sound
Taste
Light
Smell
Slide 3 - Drag question
What is habituation?
Slide 4 - Open question
What is the threshold value?
Slide 5 - Open question
C - Touch, smell, taste
Slide 6 - Slide
After this lesson you'll know
The parts of the skin and their function
The parts of the nose and the tongue
How taste and smell works in your body
BS 2 Touch, smell, taste
Slide 7 - Slide
Functions of the skin?
Slide 8 - Open question
Experiment touch receptors (15 min)
Work in groups of 3
Blindfold one person. Bend the tweezers in such a way that the two tips are 10 mm apart.
Touch the skin of the test person with the two tips at the same time.
Do this at three places: tip of the index finger (wijsvinger), lower arm and the tip of the nose.
The test person tells if he/she feels one or two tips of the tweezers. Put this in the table.
Repeat this with the tweezer tips at 8, 6, 4 en 2 mm apart, and with only one tweezer tip.
Slide 9 - Slide
Skin - consists of two layers:
Epidermis and dermis
Slide 10 - Slide
Epidermis
Corneal layer - dead cells
Basal layer - living cells that make new cells
Slide 11 - Slide
Dermis
Blood vessel
Glands (klieren)
Muscles
Hair
Receptors + nerves
Slide 12 - Slide
Sensory receptors
Slide 13 - Slide
The nose
Slide 14 - Slide
And the tongue
Slide 15 - Slide
And the tongue
Slide 16 - Slide
In which skin layer are the sensory receptors located?
A
Basal layer
B
Epidermis
C
Dermis
D
Corneal layer
Slide 17 - Quiz
Your skin is 33°C, you take a shower and the water temperature is 25°C. Which receptors will send an impulse to the brain?
A
Pressure receptor
B
Cold receptor
C
Heat receptor
Slide 18 - Quiz
Your nose plays an important role in how you taste things
A
True
B
False
Slide 19 - Quiz
You have different taste buds for every taste (sweet, salt, bitter, sour)
A
True
B
False
Slide 20 - Quiz
Let's do some work!
Learnbeat C
Slide 21 - Slide
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