Coverings and Walls of the Heart

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Across
  1. 2. has a thinner tunica media and operate under a low-pressure
  2. 3. middle layer mostly cardiac muscle
  3. 6. inner layer known as endothelium
  4. 10. when precapillary sphincters are closed blood passes through the ______
Down
  1. 1. the word for blood flow through a capillary bed
  2. 4. has thicker tunica media to withstand pressure changes
  3. 5. capillary networks are called capillary _____
  4. 7. only one cell layer thick
  5. 8. outer, visceral pericardium, connective tissue layer
  6. 9. guard the entrance to the capillary beds