heart

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Across
  1. 3. high blood pressure
  2. 6. variation from the normal rhythm, especially of the heartbeat.
  3. 8. abnormal enlargement of the heart.
  4. 10. abnormally rapid heart rate, usually taken to be over 100 beats per minute.
Down
  1. 1. the fibroserous sac enclosing the heart and the roots of the great vessels, composed of external (fibrous) and internal (serous) layers.
  2. 2. a chronic disease of the heart muscle, in which the muscle is abnormally enlarged, thickened, and/or stiffened.
  3. 4. slowness of the heartbeat, so that the pulse rate is less than 60 per minute.
  4. 5. low blood pressure
  5. 7. the middle and thickest layer of the heart wall, composed of cardiac muscle.
  6. 9. any of a group of diseases characterized by thickening and loss of elasticity of the arterial walls; popularly called “hardening of the arteries.” Symptoms depend on the organ system involved.