Circulatory & Integumentary System

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Across
  1. 3. : sends blood from the heart to the lungs and back
  2. 5. : abnormal heart rate
  3. 6. : returns blood from the upper body
  4. 7. : is the main artery of the heart carrying oxygenated blood to all parts of the body except the lungs
  5. 9. : sends blood to the rest of the body and back to the heart
  6. 10. : valves causes backwards flow of blood
  7. 11. : hardening of the arteries due to plaque
  8. 12. : large vein carrying deoxygenated blood back to the heart
  9. 13. : blockage of blood flow
Down
  1. 1. : skin color is determined by a chemical called melanin. if a lot of melanin is present, skin i very dark. if little melanin is present skin is very light
  2. 2. : are made of living and dead cells
  3. 4. : made the heart work harder
  4. 8. : returns blood from the lower body