SQL Server Perfmon memory count values

Hi.

I have recently taken a SQL Server performance count using Perfmon on the server itself.  For memory, I have used the options Memory: Pages/Sec, Memory: Available Bytes and Process: Working Set (sqlservr).  Is there any way I can interrogate the memory usage that using SQL Server has been allocated?  For example, the results of the Perfmon states that SQL server is using 5.5gb of RAM.  I would like to know what queries, functions, SPs etc within SQL Server it's using to use this memory allocation.

Thanks.