Final answer:
The Inguinal ligament is attached at the anterior superior iliac spine and the pubic tubercle, forming the lower border of the abdomen and supporting abdominal structures. It is formed by the aponeurosis of the external oblique muscle.
Step-by-step explanation:
The Inguinal ligament is an important structure in the human anatomy, particularly when studying the pelvic region. It serves as a critical component in the musculoskeletal system. The ligament extends from the anterior superior iliac spine (ASIS) on the ilium to the pubic tubercle on the pubis. These two points of attachment define its role in forming the lower border of the abdomen and providing support for abdominal structures.
This ligament is formed by the folding over of the aponeurosis of the external oblique muscle, which is part of the abdominal musculature. Its fibrous tissue structurally contributes to the strength and integrity of the pelvic girdle.