5.1 - Percieving your environment

Unit 5 Perception, behaviour and regulation

Grab your notebook and a pen
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Slide 1: Tekstslide
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In deze les zitten 34 slides, met interactieve quizzen, tekstslides en 2 videos.

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Unit 5 Perception, behaviour and regulation

Grab your notebook and a pen

Slide 1 - Tekstslide

Everybody gets one.

Describe this vegetable to your neighbour. (2 min)

Slide 2 - Tekstslide

Today's lesson
- Introduction to your senses
- Which organs are we talking about?
- How do impulses start?
- How does your nervous system function?

Slide 3 - Tekstslide

Learning objectives
5.1.1 You can describe how the senses work.
5.1.2 You are able to list the senses along with their locations and their stimuli.

Slide 4 - Tekstslide

You can sense things around you. What can you sense around you? List 5 of your senses.

Slide 5 - Open vraag

Slide 6 - Tekstslide

Reacting to the surrounding
Stimulus (prikkel) = information from the surrounding
Light, temperature, smell, sounds, skin contact

Stimulus -> sense organ -> impulse -> nerves -> brain 
Brain responds with a impulse to the muscles to react 

Slide 7 - Tekstslide

Sensing things
  • Sense organ: an organ that is sensitive to stimuli.
  • Stimulusinformation from the surroundings that has an effect on an organism.

Come up with three examples. (1 min)

Slide 8 - Tekstslide

Sensing things
You see and smell chocolate.
Your sense organs send a signal (impulse) through your nerve to your brain.

Slide 9 - Tekstslide

Sensing things
Your brain sends impulse to your arm muscle -> you grab the chocolate. 

Slide 10 - Tekstslide

Responding to our environment. 
Put these concepts in the right order.
Sense organ

Slide 11 - Sleepvraag

Adequate stimuli
A stimulus that sensory cells are particularly sensitive for 

Sensory cells in your eyes respond to light
Light is the adequate stimulus

Slide 12 - Tekstslide

Match the correct adequate stimulus to the sensory organ

Slide 13 - Sleepvraag

How an impulse starts
Stimulus needs to be strong enough -> threshold value
= the lowest intensity of stimulus that causes an impulse.

Example: a sound needs to be loud enough to hear 
-> Soft sounds don't cause impulses the lowest intensity of stimulus that causes an impulse.

Slide 14 - Tekstslide

Non-adequate stimuli
Sometimes sensory organs will respond to other stimuli
When you get hit in your eyes, you will see "stars"
But, the threshold value is higher than for the adequate stimulus

Slide 15 - Tekstslide

Habituation = gewenning

If a stimulus doesn't go away for a long time, your sensory cells will produce less impulses: they will make the threshold value higher!

You don't really feel your clothes on your body because of habituation.

Slide 16 - Tekstslide

Which square is darker?

Slide 17 - Tekstslide

Which square is darker?

Slide 18 - Tekstslide

Sense organs = zintuigen
Eyes, ears, nose, tongue, skin

Together = sensory system

Slide 19 - Tekstslide

All sensory organs together = sensory system

Slide 20 - Tekstslide

Nervous system
Central nervous system
- Brain
- Spinal cord


Slide 21 - Tekstslide

Sense receptors in the skin

Heat receptors
Cold receptors
Pressure receptors 
Touch receptors

Slide 22 - Tekstslide

Sense organs send signals through the nerves to the ...

Slide 23 - Quizvraag

All your senses together form the ...
nervous system
sensory system
brain system
sense canal

Slide 24 - Quizvraag

What do you call the signals the sense organs send out?

Slide 25 - Open vraag

What do we call the lowest intensity that can cause an impulse?
Adequate stimulus
Threshold value

Slide 26 - Quizvraag

If a stimulus does not go away for some time, it starts producing less impulses in the cell. What do we call this?
Adequate stimulus
Threshold value

Slide 27 - Quizvraag

Fill in the right words:
The smell of a fresh panini comes into your nose, this is called a .... Then a .... is sent through the nerves to the brain.

Slide 28 - Open vraag

Slide 29 - Tekstslide

Sensory cells
Sensory organs have sensory cells
Which are connected to nerves

When the sensory cells receive a stimulus they generate an impulse (kind of electrical signal)

Slide 30 - Tekstslide

Get to work
Three minutes in silence: 
  • Answer the questions from the beginning.
  • Write down any questions you still have.

After the timer has gone off
  • Discuss your answers and questions in small groups. 

Slide 31 - Tekstslide

Slide 32 - Video

Slide 33 - Video

Read 5.1 in your book and watch video (link on Magister)
Do assignment 10 (Synasthesia)

When finished:
Task 19 and 20: assignments 5.1 (1, 2, 3, 5, 7 and 9)

Slide 34 - Tekstslide