| 1. | This is why the arterioles have the highest pressure-drop.
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| 2. | Arterioles respond to metabolic stimuli that are generated in the tissues.
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| 3. | Arterioles also constrict and dilate in response to different chemical concentrations.
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| 4. | The arterioles expand and allow blood to flow through more easily.
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| 5. | This makes the venule form an hourglass shape around the arteriole.
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| 6. | Are these just little negligible unnamed arteries / arterioles or veins?
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| 7. | Arteries branch into small passages called arterioles and then into the capillaries.
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| 8. | In the arterioles blood pressure is lower than in the major arteries.
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| 9. | The dilation of arterioles in the effected area is due to vasodilation.
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| 10. | The largest proportion of resistance in this series is contributed by the arterioles.
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