Do monks have a combo of certain abilities they perform other than critting with an opener that will cause some kind of added effect? For example,  disciples use three specific abillites and that performs a big heal on their defensive target.

Just to add.

There is a combo at 50 which is a bit different to the others.
it opens with Three Finger Strike, which triggers..
Hammer Strike finisher, which triggers...
Palm Explodes the heart,... which i imagine finishes most mobs :p

In beta 2.5 the Disciples had pretty awesome utility as thier abilities had different effects depending on when you used them. e.g. Blessed Wind when used as an opener granted a heal over time, but when used as a bridge it would be a large heal. I can't really comment on how they are now since I havent touched that class since the revamp.

If that is what you meant then not really. Alothough I can say the monk can put a multitude of states on a mob that can often be exploited by group member and in the case of the Drunken and Dragon monks they can even increase thier own damage output by using them.

-Ample