1. Cardiovascular

2. Heart

3. Outer Heart Wall Me: Mesothelium simple squamous F: Fibrocollagenous tissue comprising the epicardium. CA: Coronary artery A: Layer of adipose tissue. M: Myocardium

4. Inner Heart Wall A B A: Endocardium B: Purkinje fibers

5. Purkinje Fibers P: Purkinje fibers En: Endocardium

6. A C B

7. Vasculature

8. Large Artery A B C A: Tunica intima B: Tunica media C: Tunica adventitia

9. A B

11. Medium Artery A B C A: Tunica intima B: Tunica media C: Tunica adventitia

12. A B

14. Small Artery A B C A: Tunica intima B: Tunica media C: Tunica adventitia

17. Arteriole A B C A: Tunica intima B: Tunica media C: Tunica adventitia

19. Capillary A A: Simple squamous

21. Large Vein I I: Tunica intima M: Tunica media A: Tunica adventitia V: Vasa vasorum

23. Medium Vein A B C D 10. Medium Vein A: Medium artery B: Tunica intima C: Tunica media D: Tunica adventitia

26. Small Vein A V1 and V2: Venules V3: Small vein A: Valve

28. Venule A B A: Venule B: Valve

29. A B