Can I run Campagnolo 10 speed chainrings on 11 speed crank arms?
If the hole-pattern matches, there is nothing technical why you shouldn't run those chain rings on your crank. The difference between 10s- and 11s-components is the outer width of the chain. It is a bit narrower to squeeze between the closer spaced sprockets on an 11s-cassette. Chains for 11-speed systems are around 5.4mm wide on the outside, vs. around 5.9mm wide for 10-speed ones. The inner width is the same (3/32 inches). 

So your chain rings are effectively fully down- and upwards compatible with your crank, and your other 10s- and 11s-components.