3.2 Seeing

Chapter 3: Observing
3.2 Seeing
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Slide 1: Slide
BiologieMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 20 slides, with interactive quizzes, text slides and 2 videos.

Items in this lesson

Chapter 3: Observing
3.2 Seeing

Slide 1 - Slide

Schedule today
Welcome
Learning objectives
Check knowledge 3.1
Instruction
Homework
End of class

Slide 2 - Slide

Learning objectives
You will learn 
- how your eyes are constructed
- how you are able to see colours
- how you control the amount of light in your eyes
- how your eyes are able to focus 
- how you see depth.

Slide 3 - Slide

Translate:
Prikkel
A
Sense
B
Stimuli
C
Impulse
D
Neuron

Slide 4 - Quiz

Translate:
Sense
A
Reageren
B
Ruiken
C
Zintuig
D
Prikkel

Slide 5 - Quiz

Wat is a sensory organ?
A
A change in the environment
B
Electrical signals that travel through the nerves to the brain
C
An organ that can sense stimuli and convert them into impulses
D
The processing of impulses from the environment

Slide 6 - Quiz

What is a stimulus?
A
Something you feel when you touch a sharp object.
B
Information from your surroundings.
C
A signal that's being transported through the body.
D
A part of the central nervous system.

Slide 7 - Quiz

A stimulus can be picked up by a sensory organ. Then it is being converted into an impulse. What is an impulse?
A
A chemical reaction of the body.
B
An electrical signal.
C
The same as a stimulus.

Slide 8 - Quiz

What are senses of heat?
A
Senses that are hot.
B
Senses that get hot when you use them.
C
Senses that percieve heat.
D
Senses that only operate during the summer.

Slide 9 - Quiz

Slide 10 - Slide

The outside of the eyes

Slide 11 - Slide

Slide 12 - Video

Slide 13 - Video

Slide 14 - Slide

Rods and cones
Rods (Staafjes): Black, white, grey
- work during nighttime


Cones (Kegeltjes): colours
- work during daytime
- Three types: Red, green, blue  

Slide 15 - Slide

Pupillary reflex (pupilreflex)
= enlarging the pupils in dim light and making the pupils smaller in bright light.

Slide 16 - Slide

Accomodating (accomoderen)
Accomodating = Making the eye lens more convex (bol) or flat (plat).

Ciliary muscle (straallichaam)=  A muscle surrounding the eye lens.

Lens is attached to suspensory ligaments (lensbandjes).

Slide 17 - Slide

Slide 18 - Slide

Glasses
accomodating or eyeball length 

Far sighted (Verziend): Short eyeball, only clear vision of distant objects.

Short-sighted (Bijziend): Long eyeball, only clear vision of nearby objects. 

Slide 19 - Slide

What?
Finish 3.1! --> This is homework!
Afterwards:3.2 ass. 1, 3, 4, 8, 10, 12, 13, 16-18, 20, 23, 24, 28
How?
In your workbook (or computer). Use the information from your textbook. 
Help?
You may gently consult with your neighbor or listen to music. Raise your hand if the two of you can't figure it out.
Time?
15 minutes
Finished?
Study the PIF or write a summary of 3.2.
Product
You have practiced 3.2!

Slide 20 - Slide