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GCSE
A Level & IB
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More cards in this set
Card 6
Front
Give an example of an organism which had a single circulatory system
Back
Card 7
Front
Why do mammals and birds need a double circulatory system?
Back
Card 8
Front
The hydrogen bonds present between water molecules give what properties to water?
Back
Card 9
Front
What are the 6 functions of water?
Back
Card 10
Front
What is the function of valves? Describe there structure
Back
Card 11
Front
What is the function of the connective tissue and collagen fibres in blood vessels?
Back
Card 12
Front
What size is the lumen in an artery? Why?
Back
Card 13
Front
Vasodilation and vasoconstriction is the function of what structure in the blood vessels?
Back
Card 14
Front
What do the elastic fibres do in the middle layer?
Back
Card 15
Front
Endothelium cells?
Back
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