Which of the following is NOT a function of the skeletal system?

The production of lipids is primarily associated with adipose tissue, which stores fat, rather than the skeletal system itself. While bones do store some minerals, such as calcium and phosphorus, and may contain some lipids in their marrow, the principal function of lipid storage lies within adipose tissue throughout the body.

In contrast, the skeletal system plays a vital role in providing support and structure to the body, allowing for movement through its connection with muscles, and protecting vital organs such as the heart and lungs with structures like the rib cage. Therefore, while the skeleton does perform various essential functions, significant lipid storage is not one of them.