1. Cardiovascular system

2. Elastic Artery (aorta) (H&E stain)

3. Tunica intima (aorta)
Endothelium
media

4. Elastic artery
Tunica media

5. Vasa vasorum
adventitia
media

6. Masson’s trichrome stain (aorta)
media

7. Black=elastic lamina, Red=smooth muscle
Green=collagen

8. Elastic artery
Vasa vasorum
Tunica adventitia

9. Elastic artery (van Gieson stain) TUNICA MEDIA

10. Elastic lamina=black Connective tissue=pink
Tunica Media
Elastic lamina=black Connective tissue=pink

11. Medium sized (Vein and Artery)

12. Medium sized
vein
artery

13. Muscular artery (medium sized )

14. Muscular artery
Intima
Media
Adventitia

15. Muscular artery
media
adventitia
Internal elastic lamina

16. IEL
media
adventitia

17. Muscular artery
LAMINA
External elastic laminae
MEDIA
IEL

18. Medium sized
VEIN

19. Medium sized vein
MEDIA
ADVENTITIA

20. Large sized (arteriole & venule)

21. Large Arteriole

22. (Masson’s trichrome stain)
Superficial Vein (Saphenous)
(Masson’s trichrome stain)

23. Superficial Vein (Saphenous)
media

24. Superficial Vein (Saphenous)
adventitia

25. Microvasculature Vessels

27. HEART

31. Intercalated disk (special stain)

32. Intercalated disk

33. Intercalated disc

34. Purkinje Fibers
(PAS stain)
Ordinary
cardiac muscle

35. Purkinje Fibers
Endocardium

36. Purkinje Fibers
(PAS stain)

37. Purkinje Fibers
(PAS stain)