B5 U1 2HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

B5 Healthy airways

• Take off your jacket
• Put your things on your desk

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 35-37

Lessongoals

• You can explain what you can do for yourself to keep your airways healthy
• You can describe what hay fever is

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

Homework: 1-10, 3c, 5c, 8c, 9c pgs. 22-25                           1-8, 4c, 9c, 10c pgs. 30-33 

When your ribs move up you ..

1. breathe in
2. breathe out
3. nothing happens

When your diaphragm moves up you ..

1. breathe in
2. breathe out
3. nothing happens

gas is exchanged in the alveoli.
What gas enters the blood in the alveoli?

1. Only oxygen
2. Only carbon dioxide
3. Oxygen and nitrogen
4. Carbon dioxide and nitrogen

Blood flows to and from the alveoli.
What is typical of blood flowing TOWARDS the alveoli?

1. Contains a lot of oxygen
2. Contains a lot of carbon dioxide
3. Contains a lot of oxygen and carbon dioxide
4. Contains low amounts of oxygen and carbon dioxide

Mark drinks a glass of coke. What happens to his epiglottis and uvula?

1. Both are open
2. Both are closed
3. Uvula is open and epiglottis is closed
4. Uvula is closed and epiglottis is open

What's happening in this image?

How can lungs become damaged?

Substances in cigarette smoke

• Nicotine

Gets you addicted

• Tar

Cilia don't work as good

Smokers cough

Cancer

• Carbon dioxide (CO₂)

• Carbon mono-oxide (CO)
  

Poisonous and odourless

replaces O₂

Deadly

• Dust particles

Damaging

Ventilation

• Adds oxygen to the air
• Gets rid of excess CO₂ and dangerous gases
• Helps prevent spread of bacteria and viruses

Hay fever

• Allergic to pollen (usually trees, grass)
  
• Burning feeling in nose, throat, eyes

What you should do:

• Read pages  35-37
• Do asgmt  1-7, 3c, 4c, 6c  pgs. 38-39

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:

• Read pages 35-37
• Do asgmt 1-7, 3c, 4c, 6c pgs. 38-39

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

End

Goals:

• You can explain what you can do for yourself to keep your airways healthy
• You can describe what hay fever is

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish