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What are the blood vessles
Veins, capillaries and arteries
How thick is the artery wall?
The wall of the artery is quite thick when compared to lumen.
What is the role of the capillaries?
Their role is to exchange substances with our cells (Nutrients + Oxygen)
What is the word use to describe how blood is prevented from floating backwards in veins?
Valves
3000ml of blood passes through the aorta every 5 mins. What is the rate of the blood flow?
3000/5 = 600mi/min
The walls in the veins don’t need to be very strong. Why?
The blood they carry is at a very low pressure?