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6 Cards in this Set
- Front
- Back
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List 5 types of blood vessels |
Arteries Arterioles Veins Venules Capillaries |
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Structure and adaptations of arteries |
Thick walls withstand the high pressure of blood. Rings of muscle can narrow and widen the artery to control blood flow. Elastic walls expand and relax as blood is forced out of the heart (Pulse) |
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Structure and adaptations of veins |
Valves prevent the back flow of blood Large diameter and thin walls reduce resistance to the flow of blood Nearby muscles squeeze the veins and help push blood back towards the heart |
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Structure and adaptations of Capillaries |
One cell thick for fast diffusion |
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Function of arterioles |
N/A |
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Function of Venules |
N/A |
