So we've all heard someone blame a woman's crankiness or emotions on "PMS". I'm not going to talk about why it's wrong to jump to this conclusion all the time, but I do want to know why exactly PMSing does make us grumpy, emotional, etc.? I know it's due to hormonal levels, but what in specific? Which hormones? What do the levels change to? What do these hormons control? I just kind of want to know the workings of this.
This is a more biological question as well, but I'd appreciate any knowledge on the matter.