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Card 16
Front
Why do animals need a blood circulatory system?
Back
Card 17
Front
Describe the circuit in a single circulatory system?
Back
Card 18
Front
Describe the circuits in a double circulatory system?
Back
Card 19
Front
Why does a double circulatory system require a four chambered heart?
Back
Card 20
Front
Why does a single circulatory system require a two chambered heart?
Back
Card 21
Front
What did Galen do?
Back
Card 22
Front
What did William Harvey do?
Back
Card 23
Front
What is the cardiac cycle?
Back
Card 24
Front
How is blood prevented from flowing in the wrong direction?
Back
Card 25
Front
What does more muscular activity cause?
Back
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