Across
- 2. small central thickening of fibrous tissue of each cusp
- 5. How many pulmonary veins enter the left atrium
- 6. two types of valves, atrioventricular valve and _________ ________
- 7. Irregular ridge-like projections on the internal surface of the ventricle
- 11. The remnant of a foramen that exists in the fetal stage of development
- 13. functions in closing during the contractions of the right ventricle
- 17. The heart is enclosed in this tough connective tissue sac
- 19. Partition between left and right atrium
- 20. One of the major differences between the right and left ventricle is the left ventricle is the ________ of the wall itself
- 23. Blood will flow through the pulmonary trunks to the left and right _______ _______
- 24. the muscles of the heart are drained by
- 25. The main vein returning blood from the lower half of the body
Down
- 1. venous chamber located on the posterior surface of the heart
- 3. A vertical muscular ridge on the posterior wall of the right atrium
- 4. How many cusps for each semilunar valve
- 8. Valves close to prevent
- 9. Ear-like appendages attached to the lateral surfaces of the atria
- 10. mechanical device that will allow blood flow in one direction
- 12. The coronary arteries arise from the _________ aorta
- 14. the left atrium has its muscular pectinati located in the ______ auricle only
- 15. two branches of the left coronary artery are the LAD and ___________
- 16. protects the heart anteriorly
- 18. The heart is described as having 3 surfaces, a base and an
- 21. Connective tissue cords that attach to the lower surface of the cusps
- 22. blood leaves the left ventricle and enters the