1. respiration

2. Respiration
is not
breathing!!!

3. respiration is
the break down
of glucose
to release energy

4. to write a word equation for respiration
glucose
energy
carbon dioxide
water
oxygen
Use the words above
to write a word equation for respiration

5. Respiration
occurs in all
living organisms

6. including
plants !!!

7. Plants
During the day:
respiration &
photosynthesis
At night:
respiration
only

8. the lungs
and
breathing

9. Respiratory System
What do you know????

10. The Human Respiratory System
BRONCHUS
BRONCHUS
TRACHEA
BRONCHIOLE
RIB
LEFT LUNG
MUSCLE
AIR SAC
DIAPHRAGM

11. trachea
mouth
bronchus
air sacs
bronchioles

14. Breathing movements Breathe in Breathe out Diaphragm
Contracts
Relaxes
Muscles between ribs
Contract
Relax
Rib cage
Moves up & out
Moves down & in
Volume of chest cavity
Increases
Decreases
Pressure in chest cavity
Air
Moves in to lungs
Pushed out of lungs

15. How do gases get into our blood from the air?
Gas exchange takes place in the alveoli, the little round structures (‘air sacs’) at the end of the bronchioles in our lungs.

16. How do gases get into our blood from the air?
Carbon dioxide leaves the blood and enters the alveoli, while oxygen leaves the alveoli and enters the bloodstream.
This movement of gases between the alveoli and blood is called gas exchange.

17. Our lungs contain millions of alveoli
Our lungs contain millions of alveoli. Each alveolus is wrapped up in tiny blood vessels called capillaries.
It would be worth bringing in a net of oranges to show this idea
The net around the oranges
is like the network of capillaries around the alveoli

18. enters the bloodstream
Complete the diagram and stick it into your notes
Carbon dioxide is breathed out
Oxygen is breathed in
capillary
Oxygen
enters the bloodstream
Carbon dioxide
enters the alveolus

19. How big are your lungs?
The bigger the lungs are the more oxygen can enter and carbon dioxide can leave the lungs.
To allow the maximum amount of oxygen and carbon dioxide to enter and leave the lungs, their size is extremely important.
The size of the lungs is measured as lung volume.

20. Values for lung volume are sometimes taken as a measure of lung function i.e. how well the lungs are working.
Reduced lung volume is a feature of the condition of asthma, that affects many people.

21. Measuring lung volume
You can measure lung volume using the information on P113 of the Y9 textbook. Plot the results for lung volume for each person in your class against their height. Is there a link?
Your teacher may also be able to show you a ‘peak flow meter’, which lets you measure lung function.

23. Asthma animation

24. Why worry about asthma? What are the symptoms of an asthma attack?
The person may struggle to breathe.
If a person has an asthma attack, what important gas may be decreased in their body?
Oxygen
Why is an asthma attack dangerous?
The person may not get enough oxygen to allow their cells to respire.
Why is respiration a vital process in every cell?
Respiration provides energy for all the cell’s activities that keep us alive.

25. Summa r y

26. smoking machine
video