When you select a schema from the contents pane and select Show Related for that object, the Show Related dialog lists any objects with first-level dependencies on that schema. These objects can be: procedures, triggers, user defined functions, distinct types. You can view second-level dependencies by selecting Show Related for each object with a first-level dependency.
If you remove privileges from a schema name for a given user, any attempts at using procedures, triggers, user-defined functions, or distinct types dependent on that schema fail.