electron passing nodes?
When one say that the electron goes from 1 orbit , say 2S, to another
  (higher) orbital, say 5P, it mean that the electron is excited to that
  orbit by some mean.


First off, there are no orbits. Electrons do not circle the nucleus. Rather they are in particular quantum states, or, in other words, they "occupy" particular orbitals. Note that when we say that an electron "occupies" an orbital, we just mean that it is in a particular quantum state. There is no spatial occupation in a classical sense out there: eletrons do not "sit" or "circle" anywhere, they are just in their quanatum states.

Consequently, when we say that electron "goes" from one orbital to another, what we actually mean is that the quantum state of the electrons changes. And again, an electron transition is not a mechanical motion, thus, electrons upon transitions do not "move" through nodes.