5.3 - sight

Adequate stimulus
A stimulus can only be received by the correct receptor
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Slide 1: Slide
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This lesson contains 18 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 60 min

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