Across
- 6. Thick middle layer of the heart wall
- 10. transport oxygen-depleted blood from the upper extremities, head, and neck
- 11. Layer forms both the inner wall of the pericardium
- 12. Pumps it into the aorta and distributes the blood through smaller arteries
- 16. The External layer formed by dense irregular connective tissue
- 17. Between the walls of the serous pericardium
- 18. Maintain the unidirectional flow of blood through the heart.
- 19. Covering the outer surface of the heart
- 20. transports oxygen-depleted blood from the thorax, abdomen, and lower extremities.
Down
- 1. A fibrous sack that surrounds the heart.
- 2. Gets deoxygenated blood from the body through veins, namely superior and inferior venae cavae
- 3. Covering the inner surface of the heart wall
- 4. A thin layer of serous membrane
- 5. Gets oxygenated blood from the lungs via the pulmonary veins
- 7. Pumps into the pulmonary artery and lungs to pick up oxygen-rich blood returning from the lungs
- 8. The board end of the heart
- 9. Helps the heart supply blood for itself
- 13. A larger, elastic artery
- 14. Maintain the unidirectional flow of blood through the heart
- 15. The Sequence of events that occur in the heart with each beat