Look at the diagram of the human circulatory system.
Left side of heart
|
................................................... |
Rest of body
|
Veins
|
Right side of heart
|
Artery
|
..................................................... |
Vein
|
Left side of heart
|
[2]
The blood travels through the heart twice on one complete circuit of the body.
1. ...................................................................
2. ....................................................................
How is the thickness of the heart wall on the left side different to the right side?
Write down two reasons for the difference.
Look at the diagram.
It shows a section of an artery and a vein.
1. .........................................................
2. .........................................................
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