this is a detailed image of a vertically sectioned heart with its its vessels (arteries and veins)
showing:
1. superior vena cava
2. right pulmonary arteries
3. fossa ovalis
4. pectinate muscle
5. right atrium
6. aortic arch
7. tricuspid valve
8. trabeculae carneae
9. inferior vena cava
10. moderator band
11. right ventricle
12. descending aorta
13. interventricular septum
14. left ventricle
15. papillary muscle
16. chorda tendinae
17. mitral valve
18. interatrial septum
19. left pulmonary veins
20. left pulmonary artery
21. pulmonary semilunar valve
22. ligamentum arteriosum
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