Final answer:
The iliopsoas muscle lies deep to the inguinal ligament.
Step-by-step explanation:
The iliopsoas muscle lies deep to the inguinal ligament. The inguinal ligament is a band of connective tissue located in the groin region of the body. It is an important anatomical structure that plays a role in providing support to the abdominal wall and is used as a landmark in medical and anatomical descriptions. The inguinal ligament runs from the anterior superior iliac spine (ASIS) to the pubic tubercle and forms the lower border of the inguinal canal.