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10 Cards in this Set
- Front
- Back
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What do arteries do |
Carry blood away from heart |
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Do arteries contain oxygenated or deoxygenated blood |
Oxygenated |
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Describe the arteried features |
Muscular elastic walls to withstand pressure of heart (the wall stretches) Have small lumen so that blood is pumped at a larger pressure??
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What do veins do |
Carry blood towards heart |
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Do veins carry oxygenated or deoxygenated blood |
Deoxygenatef blood |
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Describe the veins features |
Dont have pulse due to thin walls They have valves that stop backflow Have large lumen |
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What do capillaries do |
Link arteries and veins together |
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State capillaries features |
Thin wall for easy diffusion Has narrow lumen |
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What is a double circulatory system |
One system carries O2 blood from lungs to around the body One system carries CO2 blood from around the body to the heart and then to the lungs |
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Why do we need a double circulatory system |
Allows quick release of toxins and quickly supply pure O2 blood and not a mixture Supply O2 to heart quicky so pump is harder and more parts of the body receive O2 |
