Included in the Head are the three Mental Powers of the Partzuf… These encompass all the attributes of the lower Partzuf. (The three Mental Powers contain the roots of the governmental power exercised by the lower Partzuf, because Chochmah-Binah-Daat are the roots of Chessed-Gevurah-Tiferet.)
…because that is where the whole birth of the governmental order of the Partzuf in essence takes place. It is through the ingathering of all these powers on the level of Chochmah-Binah-Daat that the governmental order of the Partzuf is born, and from the Head it extends through the entire Partzuf.