Best way to run a simple function on a new Thread?

I have two functions that I want to run on different threads (because they're database stuff, and they're not needed immediately).

The functions are:

            getTenantReciept_UnitTableAdapter1.Fill(rentalEaseDataSet1.GetTenantReciept_Unit);
            getTenantReciept_TenantNameTableAdapter1.Fill(rentalEaseDataSet1.GetTenantReciept_TenantName);

In javascript, I know I can create create an anonymous function and call it on a new thread quite easily with something like this:

setTimeout(new function(){doSomethingImportantInBackground();}, 500);

Is there something like this in C#?