Across
- 3. Autonomic fibers that decrease heart rate via vagus nerve
- 5. Site where the pulmonary trunk bifurcates into right and left pulmonary arteries
- 6. Posterior recess of the pericardial cavity behind the left atrium
- 10. Structure that electrically insulates atria from ventricles while supporting valve orifices
- 13. Depression in interatrial septum marking closure of foramen ovale
- 14. Thickening of endothoracic fascia covering the lung apex
- 15. Fibroserous sac enclosing the heart and great vessel roots
- 16. Nerve that carries referred pain from pericardium to the shoulder
- 17. Valve with three cusps guarding right AV orifice
- 20. Muscular ridges on the interior walls of ventricles
Down
- 1. Ligament that tethers the fibrous pericardium to the diaphragm
- 2. Groove on the external surface of the heart that separates the atria from the ventricles
- 4. Small veins that drain directly into heart chambers, bypassing coronary sinus
- 7. Artery running in coronary sulcus to the left, giving left marginal branch
- 8. Smooth-walled posterior part of the right atrium, derived embryologically from sinus venosus
- 9. Chamber forming the apex of the heart
- 11. Coronary artery branch that typically supplies the posterior interventricular artery in right-dominant circulation
- 12. Main inspiratory muscle of respiration, pierced by IVC at T8
- 18. Ridge in RA separating pectinate muscles from smooth sinus venarum
- 19. Major vein running with the LAD in the anterior interventricular sulcus