What function of the skeletal system do major organs located within the skull, ribs, and pelvis perform?

• A. Movement
• B. Support
• C. Blood cell formation
• D. Protection

Answer: (D)

Protection is the key function described here. The skull, rib cage, and pelvis form rigid enclosures that shield vital organs from injury. The skull surrounds the brain, the ribs protect the heart and lungs, and the pelvic girdle guards the lower abdominal and pelvic organs. This protective role is crucial because these organs are delicate and essential for survival, so they’re encased in bone to minimize damage from impacts. (Bones also support the body and serve as levers for movement, and bone marrow in certain bones forms blood cells, but those roles are separate from the protective enclosure described.)