Final answer:
The iliac region is anterior to the lumbar region, which means it is located toward the front of the body. The iliac crest is on the superior margin of the ilium and is touched when hands are placed on the waist. Anatomical landmarks such as the anterior superior iliac spine and the posterior iliac spines are important for muscle and ligament attachment.
Step-by-step explanation:
The iliac region is anterior to the lumbar region. This means it is located towards the front of the body when compared with the lumbar region, which is towards the back. For orientation, when you place your hands on your waist, you're likely touching the iliac crest, which forms the superior margin of the ilium, and is part of the pelvis.
In terms of specific landmarks, inferior to the anterior superior iliac spine, there is a rounded protrusion known as the anterior inferior iliac spine. This area, as well as the posterior superior and posterior inferior iliac spines, serve as points for muscle and ligament attachments, providing structural support. These terms are crucial for understanding the anatomical relationships of the pelvis and how the iliac region situates within the body's overall structure.