The combining forms ili/o, lamin/o, mandibul/o, and maxill/o pertain to which body system?

The combining forms ili/o, lamin/o, mandibul/o, and maxill/o are all related to structures in the musculoskeletal system. The ili/o refers to the ilium, which is part of the pelvis; lamin/o pertains to the lamina, part of the vertebral arch in the spine; mandibul/o involves the mandible, or jawbone; and maxill/o relates to the maxilla, or upper jaw.

These terms specifically describe bones and structures that support movement and form in the body, which is the primary function of the musculoskeletal system. Each combining form indicates an anatomical structure vital for overall body mechanics and support. Hence, the connection to the musculoskeletal system is what makes this answer correct.