Across
- 3. Small branches of an artery leading into capillaries.
- 4. An aortic valve with only two cusps (or flaps) instead of three.
- 8. Muscular chambers that pump blood out of the heart and into the circulatory system.
- 10. Blood vessels that carry blood towards the heart.
- 11. Binge drinking alcohol causes your heart rate to ________.
- 14. The largest artery in the body.
- 15. The blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.
- 16. Each of the two upper cavities of the heart from which blood is passed to the ventricles.
- 18. Excercise causes your heart rate to ________.
- 19. Any of the fine branching blood vessels that form a network between the arterioles and venules.
- 22. ____________ blood has a low oxygen saturation relative to blood leaving the lungs.
- 23. A condition marked by severe pain in the chest, often also spreading to the shoulders, arms, and neck, caused by an inadequate blood supply to the heart.
- 24. Supplied, treated, or enriched with oxygen.
Down
- 1. A large vein carrying deoxygenated blood into the heart.
- 2. A colorless and non-flammable gas at normal temperature and pressure.
- 5. Carries deoxygenated blood from the right ventricle to the lungs.
- 6. Very small veins that collect blood from the capilliares.
- 7. One of the two main valves on the right side of your heart.
- 9. The arterial blood vessel of coronary circulation, which transports oxygenated blood to the heart muscle.
- 12. Another name for high blood pressure.
- 13. Flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle.
- 17. A reflex is an ___________ reaction; ex: blinking.
- 20. A pair of spongy, air-filled organs located on either side of the chest (thorax).
- 21. A small body of specialized muscle fibers, located in the right atrium of the heart, whose activity is responsible for initiating the heartbeat.