Across
- 4. thick and thin myofilaments are present and organized into myofibrils
- 8. small structure in the heart, located in the Koch triangle
- 10. pumps blood into the aorta
- 13. meeee
- 14. a fibrous sac that surrounds the heart
- 16. an important role in the clotting of blood during injury or surgery
- 18. muscular organ that pumps blood through the body
- 20. series of pressure changes that take place within the heart
Down
- 1. make up a major part of a circulatory system
- 2. expands the volume of the chamber
- 3. a simple and non-invasive test for measuring and recording electrical activity of the heart
- 5. blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart
- 6. transports oxygen-depleted blood from the thorax, abdomen, and lower extremities
- 7. the main artery of the body, supplying oxygenated blood to the circulatory system
- 9. pumps it into the pulmonary artery and lungs to pick up oxygen
- 10. emerges onto the anterior surface of the heart
- 11. keeps blood flowing in one direction
- 12. receives oxygenated blood from the lungs
- 15. the liquid part of blood that is mostly water
- 17. make up the myocardium portion of the heart wall
- 19. a red liquid that circulates in the arteries and veins of humans