The Heart

Laboratory Study Aid

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Across 2. name of right atrioventricular valve 8. left atrial ventricular valve; so named because of the number of its cusps 12. blood vessel; accepts blood from left ventricle 13. number of cusps in each semilunar valve 14. left atrial ventricular valve; so named because it resembles the hat of a church bishop 16. inferior tip of heart; points toward left hip 19. valve at entrance to pulmonary trunk 20. pitted & ridged muscle in ventricles 23. heart chamber; receives blood from lungs 24. number of cusps in mitral valve 26. comb-like muscle in right atrium 27. heart chamber; receives blood from body 28. blood vessels; return blood to left atrium 29. tic shaped muscles in ventricles

Down 1. valve through which blood leaving the left ventricle passes 3. vein that returns blood from heart wall to right atrium 4. remnant of ductus arteriosus 5. heart chamber with thickest walls 6. heart chamber; pumps blood to lungs 7. vein; returns blood from head & neck to heart 9. heart strings 10. fetal structure; allows blood to by-pass lungs 11. blood vessel; receives blood from right ventricle 15. vein; returns blood from legs & abdomen to heart 17. pulmonary trunk bifurcates into these 18. first blood vessels to branch off aorta 21. also called septomarginal band 22. flat top of heart; points toward right shoulder 25. flaps that look like dog ears on surface of heart

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