1. Pushing Blood Around By the end of this lesson, you will be able to…
Describe the difference between arteries and capillaries
Explain double circulation.
Label the structures of the heart.
Today’s Activities
Discussing: How does blood get around
Watching: The heart
Observing: the difference between arteries and veins
Notes

2. Which system is this?
Lungs
Heart
Artery
Vein

3. What is the role of the blood?
Glucose
Red blood cell
Plasma
Capillary
+ Oxygen
Water
+ CO2
Energy
Nucleus
Muscle cell
TRANSPORT, but how do you know?

4. What are the advantages and disadvantages of each of these circulatory systems?
FISH
Single Circulation
MAMMALS
Double Circulation

5. Traffic control
A drag and drop activity

6. A double circulatory system
Our circulatory system is in two parts and is called a double circulatory system.
This section of the system including the right side of the heart, deals with the deoxygenated blood.
Lungs
Body cells
This section of the system including the left side of the heart, deals with the oxygenated blood.
Now draw and label fig 9. on p.23 of Platinum Text book

7. The Heart This is the pump at the centre of the circulatory system.
Not all living organisms have hearts.
Also, the shape of the heart can change, depending on what species you look at.
The heart is made almost entirely of muscle. It is unlike any other muscle in your body because it never tires. And even though it is full of blood it still needs it own blood supply.
Oxygenated blood is carried to the heart by the coronary arteries.

8. Each side of the heart has two chambers.
1. A top chamber or atrium and
2. A bottom chamber or ventricle
Each of these chambers has its own function.

9. thick muscle and elastic fibres
Artery cross-section
thick muscle and elastic fibres
small lumen

10. Veins: cross-section
large lumen
thin muscle and elastic fibres

11. A drag and drop activity

12. Now copy and complete the table from Activity 5 on p
Now copy and complete the table from Activity 5 on p.55 of Platinum G9 Text Book
Characteristics
Arteries
Veins
Capillaries
Direction of Blood Flow
Type of blood transported
Thickness of Walls
Blood pressure in vessels