U5 B4 1HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

B4 The nervous system

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 

Lessongoals

• You can describe the structure and functions of the nervous system
  
• You can describe the structure of nerve cells and nerves.
  
• You can describe a reflex arc

Homework U. B.

Asgmt 1-7, 4c

OR challenge

Asgmt 3, 5-9

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

In what part of the ear is the sound (stimulus) changed into an impulse?

1. ear drum
2. auditory ossicles
3. cochlea
4. auditory nerve

At what moment do you become aware of a sound?

1. the moment sound enters your ear
2. the moment the sound reaches the eardrum
3. the moment the sound has reached the cochlea
4. The moment the impulse of the auditory nerve has reached the brains

What part of the retina is best at seeing colours?

1. Sclera
2. Fovea
3. Choroid
4. Blind spot

The pupil can change its size.
You're in your bed at night, you decide to turn on the lamp in your room, what happens?
The size of your pupil will change from .. to ..

1. Big to small
2. Small to big
3. Normal to big
4. It doesn't change

What part of the eye changes light stimuli into impulses?

1. Pupil
2. Lens
3. Retina
4. Optic nerve

Nervous system

Central nervous system:

brain and spinal cord

You touch your bike, and you feel that it is very cold.
How does the impulse travel in your body?

1. skin > nerve > spinal cord > brain
2. brain > spinal cord > nerve > skin
3. skin > spinal cord > nerve > brain
4. skin > brain > spinal cord > nerve

You use your leg to kick a ball.
How does the impulse travel in your body?

1. muscle > nerve > spinal cord > brain
2. brain > spinal cord > nerve > muscle
3. brain > nerve > spinal cord > muscle
4. muscle > spinal cord > nerve > brain

taking in impulses from your senses

Making muscles move

Making glands produce substances

Nerve cell

• 1 nerve contains many nerve cells
• Axons take in impulses
• Axons send impulses away
• 3 types of nerve cell

S

M

I

Reflex arc

Conscious reaction = brain decides how to react 

                                            reaction is voluntary

Reflex = involuntary, fixed and fast reaction

                  to stimulus

Suddenly a bright light is shining in your eyes,
your pupils become smaller.

1. Reflex
2. Conscious reaction

Someone suddenly throws a small ball your way. Without too much trouble,
you manage to catch the ball.

1. Reflex
2. Conscious reaction

You open the tap to wash your hands.
The water is hot, you pull away your hands immediately.

1. Reflex
2. Conscious reaction

What you should do: U5 B4

• Pages  110-116
• Asgmt  1-7, 4c

OR challenge

• Asgmt 3, 5-9

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do: U5 B4

• Pages 110-116
• Asgmt 1-7, 4c

OR challenge

• Asgmt 3, 5-9

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Tidy Duty

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish