The term "isquion" refers to a specific anatomical structure in the human body, particularly related to the pelvis. It is part of the ischium, one of the three bones that make up the hip bone. The isquion forms the lower and back part of the pelvis and plays a crucial role in supporting the weight of the body when sitting. In addition to its structural importance, the isquion serves as an attachment point for various muscles and ligaments. This includes the hamstring muscles, which are essential for movements like walking and running. Understanding the isquion's function helps in studying human anatomy and biomechanics.