Across
- 2. tiny air sacs of the lungs
- 4. colorless watery fluid of the blood
- 5. a deficiency of red blood cells
- 6. a structure in a hollow organ with a flap to insure one-way flow of fluid through it
- 8. high blood pressure
- 11. important part of the body's defense system
- 13. blood vessel that carries blood away from the heart
Down
- 1. measured by a pulse
- 3. blood vessel that carries blood toward the heart
- 5. the clogging or hardening of arteries or blood vessels
- 6. a chamber of the heart that receive blood from the atrium
- 7. contains hemoglobin to the bodily tissues
- 9. the rupture of a blood vessel which makes a lack of oxygen in the brain
- 10. protein in red blood cells that allow it to carry oxygen
- 12. death of an area of heart tissue due to blockage of blood flow to the heart muscle