FPGA resources

When I look at my compilation report for my FPGA code on a PXI-7833R.  I see teh parameters below.  They are all listed individually.  However, I thougth a slice consists of register and LUT, isn't it?  Does Slice Registers and Slice LUTs just further explain Total Slices?  If so, I don't see how the math works out in my attached compilation report.  

Total Slices

Slice Registers

Slice LUTs

Block RAMs