5.5 Smell 1HVTTO

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

5.5 Smell

• Jacket in your locker

• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor

• Read pages 128-129

5

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00

second

add30s

Lessongoals

• Remember: I can name the body parts involved in my sense of smell by correctly identifying them.

• Understand: I can explain what these body parts do to help me smell by describing their role in detecting scents.

• Understand: I can explain how my nose protects me against unhealthy substances in the air by describing its defense mechanisms.

Homework 5.5

Asgmt 29-30

What are stimuli and impulses

A

A stimulus is something that sensory organs take in. Impulses are signals in the nerves

B

An impulse is something that sensory organs take in. Stimuli are signals in the nerves

C

They are both something taken in by sensory organs

D

They are both signals in your nerves

What part of the retina is best at seeing colours?

A

Sclera

B

Fovea

C

Choroid

D

Blind spot

Why don't we notice the fact that our retina has a blind spot?

Which of these does the brain use to make your muscles move.

A

Stimulus

B

Impulse

Scan the chapter

Use your book and laptop/notebook

• Go to chapter 5.5 on pages 128-129

• Quickly scan the text for difficult/unknown words

• Make a list of all the words you don't know/understand, add these to your PIF

• Add descriptions and/or synonyms of these words during the lesson

4

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00

second

add30s

nasal hairs

Filter out dust particles

Sense of smell

Checks the air for strange/dangerous smells

bloodvessels

Warms up the air, helps protect the tissues of the lungs.

Breathing through your nose

Lots of names for parts!

Dont worry about all the names of the different parts!

You only need to recognize the following parts:

Nasal cavity

Olfactory cells

Nerve

Nasal lining

built out of mucus-producing cells and cells with cilia.

The mucus traps smaller dust particles and germs, It also moistens the air

The cilia moves the mucus towards the throat to be swallowed

Smelling scents

nerve

Olfactory cells

scent particles

Odours/scents/smells are a combination of different chemicals in the air.

Specialized sensory receptors that change the scents (stimuli) into impulses

Sends the impulses from your olfactory cells to the brain.

The brain interprets the impulse and lets you know that you smell something (and in most cases what you are smelling)

Think-Pair-Share

• Think: Work on the assignment on your own.

• When you visit a farmer, you might first smell a stinky scent. But only a minute later you won't notice that smell anymore.

• Is the smell gone?

• Explain: Why don't you smell it anymore?

• Pair: Discuss and compare with your neighbour, improve your answer

• Share: Talk about given answers during plenary session.

2

minute

00

second

add30s

These words I'll add to my PIF

Zs = Working in Silence

• No asking questions

• Silent, don't disturb anyone

• Stay at your  desk

What you should do: 5.5

• TB: pages  128-129

• WB: Asgmt  29-30 

• Lt: Asgmt 1-2

Done with the above?

• Work on the next chapter(s)

• Learn for the test 

• Make other homework

• Read a book

6

minute

00

second

add30s

What you should do: 5.5

• TB: pages 128-129

• WB: Asgmt 29-30 

• Lt: Asgmt 1-2

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

When people smell a stinky scent, they often use their hand to close off their nose. Why can this simple behavior be important?

Tidy Duty

3 people each lesson

• Desks: empty and straight

• Chairs:  underneath the desks OR end of day: on the desks

• Floor: no rubbish