Why is salt water good for wounds?

Question

Why is salt water good for wounds?

Answer 1

I'm guessing the salt in the water acts like an antiseptic and may flush out any germs or kill any bacteria?  Not 100% on that but i was told that as a child.

Answer 2

High salt concentration affects the osmotic pressure of bacterial cell, hence, it is good for wounds.

I also find this in wikiAnswer: Salt is a bacteriostat (stops bacteria replicating) and it acts as a cleaning agent, removing dead skin cells and dirt from the wound.