Yochanan Muffs gives a brief overview of Adam Qadmon (the first man) traditions.
Yochanan Muffs, The Personhood of God: Biblical Theology, Human Faith and the Divine Image (Woodstock, Vt: Jewish Lights Publishing, 2005), 3
In the various Mesopotamian texts, there is a tendency to subsume all of the gods and heir respective functions and to concentrate them in a single high god. Thus, for example, Enlil was the high god; Shamash the sun god would be his eyes, Ishtar his hands, Ea his legs, and so forth down the line. It is a kind of mystical monotheism that can be compared with the Jewish mystical doctrine of Adam Qadmon (the first man). God is depicted in the form of the human body and His various moral attributes—mercy, justice, truth, glory, splendor—are associated with different organs of His body. God, expressed by the living organism of His body. God expressed by the living organism of Adam Qadmon, was a creature of the whole reign of moods, potencies, and powers.