Circulatory System Anatomy

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Across
  1. 3. These ensure one way flow through veins by opening and closing
  2. 5. The arteries are separated from the ventricles by the _______ valves
  3. 7. Branches from arterioles that allow blood to bypass capillaries when precapillary sphincters constrict
  4. 8. Blood vessel that connects arteries to capillaries
Down
  1. 1. _____ capillaries have large pores
  2. 2. Artery that takes oxygenated blood away from the heart
  3. 3. Blood _____ increases with increasing bulk flow and decreasing summed cross-sectional area
  4. 4. Blood vessel where gas exchange occurs. Vessel wall is one cell thick
  5. 5. The phase of the heart when the heart contracts
  6. 6. Type of vessel that carries deoxygenated blood back to the heart