Dealing with function imports in asp.net mvc3 using entityfr

Hi am new to asp.net and entityframework i have created some tables and stored procedures in my database and i have imported all the storeprocedures in my edmx file but here the main challenge is that i have to retrive the data from database using storedprocedues and function import but i dont know how to use that function import to retrive the data can any one please help me to achieve this...............