Circulatory & Integumentary System

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