Across
- 3. blood pressure: made the heart work harder
- 6. hardening of the arteries due to plaque
- 7. infarction (heart attack): blockage of blood flow
- 9. is the main artery of the heart carrying oxygenated blood to all parts of the body except the lungs
- 10. vena cava: returns blood from the upper body
- 11. 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
Down
- 1. circulation: sends blood to the rest of the body and back to the heart
- 2. vena cava: returns blood from the lower body
- 3. and nails:are made of living and dead cells
- 4. cava: large vein carrying deoxygenated blood back to the heart
- 5. valves: causes backwards flow of blood
- 6. abnormal heart rate
- 8. circulation: sends blood from the heart to the lungs and back