http://www.talkorigins.org/indexcc/CB/CB301.html
http://www.don-lindsay-archive.org/creation/eye_time.html
The short summary is that for an eye, there is no question of irreducible complexity. Half an eye is very useful if you pick the right half. The same is true of many of the other body parts or systems you mention. Plenty of examples exist of creatures that have less complexity than humans and survive just fine.
I address all of the many interdependent systems in complex multi-cell organisms, and you choose to reply about the "eye." How thoroughly pointless and evasive... just like all Evo-Junk-Scientists and their Kool-Aid swilling prostheletytes