Across
- 4. __________tendineae:Tendon-like cords that anchor the heart valves to the heart muscles
- 5. ___________ node, The natural pacemaker of the heart, located in the right atrium, responsible for initiating the electrical impulse that starts each heartbeat.
- 8. One of the two upper chambers of the heart
- 9. A conductive pad attached to the skin to detect electrical activity from the heart, connected to the EKG machine by wires.
- 11. A large vein that carries deoxygenated blood from the lower body to the right atrium.
- 14. The double-walled sac that surrounds and protects the heart.
- 15. The first wave in the EKG cycle, representing atrial depolarization, which is the electrical activity associated with the contraction of the atria.
- 18. ______valve between the right ventricle and the pulmonary artery.
- 20. A test that measures the electrical activity of the heart and records it as a graph or series of waves.
- 21. ________complex A series of waves on the EKG that represents ventricular depolarization, which is the electrical activity associated with the contraction of the ventricles.
- 23. The inner lining of the heart chambers.
- 25. ______valve between the left ventricle and the aorta.
- 27. Specialized conductive fibers located within the walls of the ventricles, responsible for spreading the electrical impulse throughout the ventricles to ensure coordinated contraction.
- 30. A large vein that carries deoxygenated blood from the upper body to the right atrium.
- 31. ______valve between the right atrium and the right ventricle.
- 32. Left ________ Artery Supplies blood to the anterior portion of the left ventricle and the front of the septum
Down
- 1. A node that is a cluster of cells that regulate the electrical impulses between the atria and the ventricles.
- 2. A vessel that carries oxygenated blood from the lungs to the left atrium.
- 3. ___________ node, A cluster of cells in the heart located between the atria and ventricles that acts as a gatekeeper, slowing the electrical impulse before it passes to the ventricles.
- 6. The wave following the QRS complex, representing ventricular repolarization, which is the recovery phase of the ventricles after contraction.
- 7. One of the two lower chambers of the heart
- 10. A specific electrical view of the heart's activity used in standard EKGs, it provides a different perspective of the heart's electrical activity.
- 12. __________Arteries that supply blood to the heart muscle.
- 13. Structures that open and close to regulate blood flow through the heart's chambers and into the arteries.
- 16. The wall that divides the left and right sides of the heart.
- 17. The muscular tissue of the heart responsible for contracting and pumping blood.
- 19. Left ________Artery primary source of blood supply to the left side of the heart with 2 branches
- 22. Artery primary source of blood supply to the right side of the heart
- 24. A vessel that carries deoxygenated blood from the right ventricle to the lungs.
- 26. ______ between the left atrium and the left ventricle.
- 28. A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the ventricles.
- 29. The largest artery in the body; carries oxygenated blood from the left ventricle to the rest of the body.