Final answer:
The free edge of the aponeurosis of the external oblique muscle forms the superficial layer of the anterolateral abdominal wall.
Step-by-step explanation:
The free edge of the aponeurosis of the external oblique muscle forms the superficial layer of the anterolateral abdominal wall.
The external oblique muscle is one of the four pairs of abdominal muscles that cover the anterior and lateral abdominal region and meet at the anterior midline.
This muscle extends inferiorly and medially, resembling the motion of sliding one's four fingers into pants pockets.