5.3 Sight

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Planning for next few weeks

This week: Bs 3 The eye + PO practice

Next week: PO + look at test + Bs 7

Week after: Repetition + Test

Planning for today

• Bs 3: Sight (15 min)
  
• Read in silence (10 min)
• Homework (10 min)

After this class

You can describe the structure and function of the eye.

The eye

Notes

• Eyebrow (wenkbrauw): Protects the eye against sweat and other liquids (vloeistoffen)
  

• Eyelashes (wimpers): protects the eye against dirt and bright light
  

• Sclera (harde oogvlies): white of the eye. The eye muscles are attached to the sclera
  

• Pupil: The pupil lets light into the eye.

Notes

Eye muscles (oog spieren): they move the eye 

Cornea (hoorvlies): The iris and the pupil are covered by the transparent cornea.

Iris: The coloured part of the eye

Eye muscles

Cornea

Iris

Cross-section of the eye

Notes

Tear glands (traanklieren): produce tears

 Vitreous body (glasachtig lichaam): Jelly-like mass

Lens: makes you see sharply

Notes

The wall of an eye consists of three layers:

Sclera,

Choroid (vaatvlies): contains blood vessels for nutrition,

Retina (netvlies): Contains sensory cells.

Optic nerve: transmits the impulses to the brain.

Fovea (gele vlek): Where you see most sharply

Blind spot (blinde vlek): there are no sensory cells on the blind spot

In bright light

In dim light

Near-sighted

Long-sighted

Lets get to work  

- Read basic 3 (Unit 5) in 10 min silence

- Make the worksheet

What you don't finish is homework!

PO: Praktische opdracht

• You are going to do a experiment and make a research raport.
• You will do this in groups of 2 
• This will count 1x

How to do research

1. Introduction: what information do you already have

2. Research question: What are you going to research?

3. Hypothesis: What do you expect to be the answer on you research question

4. Material: what do you need to do this experiment

5. Method: What steps do you take to do the experiment and answer your research question

6. Results: What do you see during your research

7. Conclusion: Answer your question based upon your hypothesis and results.