Vtec - What makes a Vtec

This picture show us the components or parts in Vtec engines. (Click pic to enlarge) This is what makes a Vtec.
1.   cylinder head
2.   camshaft holder plates
3.   camshaft caps
4.   JDM valve cover
5.   valve spring assembly
6.   valve assembly
7.   rocker arm assembly
8.   rocker arm shafts
9.   camshafts
10. crank pulley components
11. timing belt tensioner
12. waterpump
13. oil pump front cover
14. oil pump rear cover
15. oil pump gears
16. flywheel side cover
17. Vtec solenoid
18. camshaft pulleys
19. B-series cylinder block
20. main bearing cap asembly
21. crankshaft
22. thrust washers
23. main crankshaft bearings
24. connecting rod bearings
25. pistons
26. connecting rods
27. head gasket