Across
- 2. a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation
- 5. the phase of the heartbeat when the heart
- 6. the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body
- 7. a blood vessel that carries blood from the heart to tissues and organs in the body
- 10. a very small vein, especially one collecting blood from the capillaries
- 13. biological one-way valves that control blood flow through the heart, ensuring it moves in the correct direction and prevents backflow
- 15. known as a brain attack or cerebrovascular accident (CVA), is a medical emergency that occurs when blood flow to the brain is interrupted
- 17. the four main divisions of the heart that receive and pump blood throughout the body
- 18. a condition where the force of blood pushing against the artery walls is consistently too high, often measured as 130/80 mmHg or higher
- 20. period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle
Down
- 1. relaxes and allows the chambers to fill with blood
- 3. a disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls
- 4. a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary
- 8. delicate blood vessels (tubes that hold blood) throughout your body
- 9. a type of chest pain or discomfort caused by a reduced blood flow to the heart muscle
- 11. cancer on lymphatic cells
- 12. enlarged lymph nodes signal an immune response
- 14. a small branch of an artery leading into capillaries
- 16. swelling due to blocked lymph drainage
- 19. any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart