Biology 20 - Patricia Schwandt Courses - Home

Varicose (Spider) Veins – large volumes of blood can distend the veins. When this pooling of blood occurs over a long period of time the one-way valves are damaged. Worksheet – Blood Vessels. 1. Label the following diagram. 2. Use blue and red to indicate whether the vessel carries oxygenated blood (red), deoxygenated blood (blue) or both. 3. ................
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