1.4 Breathing

1.4 Breathing - experiment
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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 3

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time-iconLesduur is: 45 min

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1.4 Breathing - experiment

Slide 1 - Tekstslide

Planning for today

  • Planning till test (2 min)
  • Lookback last class (10 min)
  • 1.4: Breathing (10 min)
  • Exercises (20 min)



Slide 2 - Tekstslide

at the end of class
... you can describe how inhalation and exhalation are achieved.
 



Slide 3 - Tekstslide

planning till test
29/09
1.4 breathing
30/09
1.8 cold and warmblooded
06/10
Prepare for test
07/10
Test

Slide 4 - Tekstslide

Slide 5 - Tekstslide












Complete sentences. Choose between: a lot of – only a little.
  • The air at arrow 1 contains ...  oxygen and ...  carbon dioxide.
  • The air at arrow 2 contains ...  oxygen and ... carbon dioxide.
  • The blood at arrow 3 contains ,,,  oxygen and ...  carbon dioxide.
  • The blood at arrow 4 contains  ... oxygen and  ...carbon dioxide.










Explain how you can tell from the diagram which interval (P or Q) had more combustion taking place in Alex’s body.

Slide 6 - Tekstslide

You breathe using the respiratory muscles.

Slide 7 - Tekstslide

chest breathing
In chest breathing (thoracic breathing), the ribs and the breastbone move.

Breath in:
Intercostal muscles tense --> moves your ribs and breastbone up,

Breath out:
Intercostal muscles relax --> gravity moves your ribs and breastbone down.

Slide 8 - Tekstslide

Slide 9 - Tekstslide

abdominal breathing
In abdominal breathing (diaphragmatic breathing), the diaphragm and abdominal wall move.

Breath in:
The diaphragm contracts, making it move downwards

Breath out:
The diaphragm relaxes, making it move back upwards to normal position.
(Extra strong exhalation: abdominal muscles contract) 

Slide 10 - Tekstslide

Slide 11 - Tekstslide

Practice - you can check all the goals
of the respiratory system!
Read 1.4: chest and abdominal breathing
make ex. 1, 2,3,8,9

Read page 64-65 about vital capacity
Write the experiment design on page 76-77
- Perform lung test and write your score on table

done? 

Formative test - Unit 1 
timer
15:00

Slide 12 - Tekstslide