1. Big Q: What do I need to Revise for the Gas Exchange test?
Friday, April 05, 2019
Starter: State the muscles in your arm.
Describe how your muscles change when you bend your arm up.
Biceps contract
Triceps relaxes
Biceps relaxes
Triceps contract
Bending your arm up
Extend your arm out
These are antagonistic muscles.
Big Q: What do I need to Revise for the Gas Exchange test?
LO:
State the different processes involved in gas exchange
Describe how gases move around the body using different systems.
Explain how different chemicals can affect the respiratory system.

3. Groups 1 2 4 5 6 7 8 Jacob Mackenzie OliviaW Beth Daniel Jay Lily-May3 4 5 6 7 8
Jacob
Mackenzie
Adrienna
OliviaW
Beth
Daniel
Jay
Lily-May
Sam
Lucy
Austeja
Katie
Eric
Stevie
Kieron
Alex
Niamh
Jack
Urte
Isobel
Emily
Abi
Oliwia L
Lewis
Chelsey
Darcey

4. CHALLENGE: What does the above picture show you about respiration?
1. Aerobic Respiration
State what respiration is.
Describe the equation of respiration.
Explain where respiration takes place and why it is important.
CHALLENGE: What does the above picture show you about respiration?

5. 2. Anaerobic Respiration
When anaerobic respiration takes place, lactic acid is also produced.
Lactic acid builds up in the muscle cells and prevents the muscles doing their job. This is thought to cause fatigue and sometimes cramp.
After exercise the body needs to remove the lactic acid before it causes damage to cells.
What is the difference between aerobic and anaerobic respiration?
Describe what oxygen debt is.
Explain how we can get rid of a stitch when exercising for long periods of time.
What are the similarities and differences of aerobic and anaerobic respiration?
CHALLENGE: What would anaerobic respiration look like in a plant?

6. CHALLENGE: What would happen if the alveoli are damaged?
3. Gas Exchange A B C D E F G H I
Label the parts of the lungs using the labels.
Describe which pathway the oxygen molecules take when you breathe in.
Explain why oxygen needs to be exchanged at the alveoli.
Draw what the alveoli looks like and say how the alveoli is adapted to carry out gas exchange.
CHALLENGE: What would happen if the alveoli are damaged?

7. CHALLENGE: What would happen if the heart is not functioning properly?
4. Circulatory system
What are the 3 things it is made up of?
Describe the pathway of blood.
Explain why blood needs to be pumped around the body.
CHALLENGE: What would happen if the heart is not functioning properly?

8. 5. Blood vessels Draw diagrams of the blood vessels with names
Describe how these blood vessels are different to each other.
Explain why valves are present in veins.
CHALLENGE: Why are there 2 sections to the heart and how does this link in with the blood vessels?

9. Describe what happens when you breathe in and out.
6. Breathing
What is breathing?
Describe what happens when you breathe in and out.
Explain the difference between breathing (ventilation) and respiration.
CHALLENGE: Explain how the model of balloons show how lungs work. Why is it a good model and a bad model?

10. 7. Effects of Chemicals Which chemicals can affect your breathing?
Describe what can happen to the lungs if you smoke.
Explain how each of these chemicals can be dangerous.
CHALLENGE: Why do people find it hard to quit smoking ? How are we trying to help these people?

11. 8. Skeletal & Muscular systems
Name 5 main bones and muscles.
Describe how a joint works.
Explain how muscles can work in pairs.
CHALLENGE: Why do older people struggle with their joints? Why does this happen?

12. If you have finished…try some questions from the red book to test your revision!
Page number
Question 32 13 55 3 59 7 66 14
EXTENSION: Plan an experiment to investigate the strength of your muscles.
Independent (change)
Dependent (measure)
Control (same)
Method (step by step instructions of how to carry out your experiment.)
Results table
Independent variable
Dependent variable

13. Questions What is produced when aerobic respiration takes place?
What is the difference between aerobic and anaerobic respiration?
Where does oxygen diffuse into when it reaches the alveoli?
Why does the blood travel to the lungs from the heart?
Which blood vessel carries blood away from the heart?
What is the difference between breathing & respiration?
Why is carbon monoxide dangerous?
Give me an example of antagonistic pairs of muscles.
Aerobic respiration
Anaerobic respiration
Gas exchange
Circulatory system
Blood vessels
Breathing
Effects of chemicals
Skeletal & muscular systems
Carbon dioxide & water.
Aerobic –with oxygen anaerobic – without oxygen.
The bloodstream.
To get oxygen.
Artery.
Breathing = physical & respiration = chemical reaction
Takes place of oxygen on red blood cells.
Biceps & triceps.