Across
- 1. The valve must close before blood will flow from the heart to the body regions
- 6. Visceral layer of the pericardium
- 8. Thick, muscular walled chambers. Pumps blood out of the heart through arteries.
- 9. The artery containing the greatest amount of oxygenated blood pressure
- 11. Endothelial layer of the inner myocardial surface
- 12. The walled chambers that receive blood returning to the heart through veins
- 13. Cardiac muscle layer forming the bulk of the heart
Down
- 2. Major route of blood from lower body to heart
- 3. The artery leading from the heart which contains deoxygenated blood
- 4. The vessel that returns blood from the head, neck, and arms to the heart
- 5. The heart valve that has three flaps or cusps
- 7. Blood, high in oxygen, returns to the heart by means of this vessel
- 10. Seperates the right and left sides of the heart