Circulatory System Anatomy

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