About codeiniters structure

[eluser]behnampmdg3[/eluser]
Hello;

I appreciate if anyone can explain a bit about how a page loads with CI framewrok. For example something like this:

1 - All required libraries, helpers,...load
2 - Required controllers load
3 - Required Models load
4 - Required views load

Or did I get it totally wrong? What did I miss?

Thanks