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5.3 - sight
Adequate stimulus
A stimulus can only be received by the correct receptor
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Biologie
Middelbare school
vwo
Leerjaar 1
This lesson contains
18 slides
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interactive quizzes
and
text slides
.
Lesson duration is:
60 min
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Items in this lesson
Adequate stimulus
A stimulus can only be received by the correct receptor
Slide 1 - Slide
What is the adequate stimulus for your eyes?
Slide 2 - Open question
How do you call the minimum/maximum strength of a stimulus for a sense organ?
Slide 3 - Open question
How do you call a signal from a sense organ to your brain?
A
Neuron
B
Stimulus
C
Adequate stimulus
D
Impulse
Slide 4 - Quiz
Types of nerve cells
Interneuron
Present in Central Nervous System (CNS)
Sensory neuron
Connected to sense organs
Motor neuron
Connected to muscles or glands
Slide 5 - Slide
Which type of nerve is connected to light sensitive cells in your eyes?
A
Interneuron
B
Sensory neuron
C
Motor neuron
Slide 6 - Quiz
Unit 5: Perception, behaviour and regulation
§3 Sight
Slide 7 - Slide
The outside of the eye
(frontal view)
The outside of the eye
(side view)
Slide 8 - Slide
Eye movement
Muscles can move the eyeball in many directions
Attached to the
sclera
(white part)
Slide 9 - Slide
The inside eye
3 outside layers:
sclera (outer)
choroid (middle, blood vessels)
retina (sensory cells)
Light comes in through pupil and lens
Slide 10 - Slide
The inside eye
Most sensory cells in
fovea
No sensory cells in
blind spot
(connection of eye with optic nerve)
Slide 11 - Slide
Make §5.3
Assignment 3 (5 mins)
Slide 12 - Slide
Pupillary reflex (dim light)
Pupillary reflex (bright light)
Slide 13 - Slide
How the eyes work
Slide 14 - Slide
What if your lens is not the right shape?
Slide 15 - Slide
Near-sighted
Near objects clear
Far away object not clear
Lens too convex (
bol
)
Glasses with concave (
holle
) lenses
Slide 16 - Slide
Far-sighted
Near objects not clear
Far away objects clear
Lens not convex enough
Glasses with convex lenses
Slide 17 - Slide
The inside eye
Most sensory cells in
fovea
No sensory cells in
blind spot
(connection of eye with optic nerve)
Slide 18 - Slide
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