C5 Sense it - introduction

• Science
• Middelbare school
• havo
• Leerjaar 1

Sense it

chapter 5

What senses do we have?

What are senses?

https://www.bbc.co.uk/bitesize/topics/z9yycdm/articles/zxy987h

Make word groups

GOAL: activate your knowledge on senses

HOW: work in your duo, use an A3 paper

Adjectives

• noun, extra info, pimp
• verbs of the senses

Adverbs

• verb, adverb, adjective

Make word groups

• Make catergories
• Match each word to a categorie

If a word does not fit, make up a new categorie

Need a hint? Let your teacher know

Read

BOOK: BRICKS textbook 

CHAPTER:  5 Sense it

WHAT: Introduction + 5.1 Stimuli and responses

HOW: 15 minutes, in silence

DONE? start with exercise 1-3

What's a stimulus?

1. an organ reacts to something in the surroundings
2. Electrical signals that go to your brain
3. An influence from your surrounding
4. A cell that catches impulses

What is the stimulus,
What is the response?

1. stimulus: seeing the lemon; response: closing the eyes
2. stimulus: closing the eyes response: tasting sour
3. stimulus: closing the eyes; response: seeing the lemon;
4. stimulus: tasting sour response: closing the eyes

Talking point

Discuss with a classmate why being able to see is important for the survival of many animals. What would happen if the animal could not see anything? Then also discuss why being able to smell, hear, feel and taste are important for survival.

Senses

In the senses are sensory cells, they are connected to nerve cells (that send  impulses 

towards the brain)

Senses in the human

Sense (zintuig) = "meetapparatuur"/ receptor om de omgeving mee waar te nemen.   All senses = sensory system

Name a stimulus and a response.

How does the nervous system work?

Sensory cells (receptor) receive stimulus from
                               outside (for example chocolate)

   sensory neurons                                                                                                                                      = impulses     interneurons ( spinal cord)   

             brain    

    interneurons ( spinal cord)             

    motor neurons            muscles (effector)

Sensory receptors in your ear receive the sound and change it into nerve impulses.

The nerve impulses travel along neurons to your brain:

You become aware of your phone ringing.

The brain sends its own nerve impulses along other neurons to your arm muscle.

Your arm muscle contract and you pick up the phone = response.

1

2

3

4

5

Your phone rings. The sound of the phone ringing is a stimulus.

Sensory receptors in your ear receive the sound and change it into nerve impulses.

The nerve impulses travel along neurons to your brain: you become aware of your phone ringing.

The brain sends its own nerve impulses along other neurons to your arm muscle.

Your arm muscle contract and you pick up the phone = response. Your muscles are called effectors because they make the response possible.

Excersises

BOOK: BRICKS textbook 

CHAPTER:  5 Sense it

WHAT: start with exercise 1-3