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1.4 Breathing
U1: combustion and respiration
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Slide 1:
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Biologie
Middelbare school
vwo
Leerjaar 3
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U1: combustion and respiration
Slide 1 - Diapositive
Planning for today
Planning till test (2 min)
Lookback last class (10 min)
1.4: Breathing (10 min)
Exercises (20 min)
Slide 2 - Diapositive
at the end of class
... you can describe how inhalation and exhalation are achieved.
Slide 3 - Diapositive
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 - Diapositive
Slide 5 - Diapositive
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 - Diapositive
You breathe using the
respiratory muscles
.
Slide 7 - Diapositive
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 --> moves your ribs and breastbone down.
Slide 8 - Diapositive
Slide 9 - Diapositive
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.
Slide 10 - Diapositive
Slide 11 - Diapositive
Homework
Read 1.4: chest and abdominal breathing
make ex. 2,3,8,9
done?
Make test yourself 1.4
Slide 12 - Diapositive
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