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How does the heart pump blood through the body?
I'm having trouble understanding how the heart creates pressure to push blood through all the vessels...
What's the difference between arteries and veins?
Can someone explain the main differences between arteries and veins in simple terms?
Help with respiratory system quiz preparation
I have a quiz tomorrow on the respiratory system. Any tips for remembering the parts of the lungs?
Virtual lab experiment not working properly
The heart rate lab simulation keeps freezing when I try to start the experiment...
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