What is the primary function of flat bones in the human body?

The primary function of flat bones in the human body is to support and protect soft body parts. Flat bones, such as the skull, ribs, and sternum, provide a crucial role in safeguarding vital organs. For example, the skull encases the brain, while the ribcage protects the heart and lungs. This structural role is essential for maintaining the integrity of the body's vital systems.

Although there are other functions associated with bones, such as mineral storage and blood cell production—which flat bones also contribute to—these aspects are not their primary function. The role of facilitating movement through muscle attachment is more characteristic of long bones, which are designed to act as levers. Similarly, while some bones do enhance locomotion, flat bones are primarily focused on support and protection rather than acting as levers in movement.