What is the primary purpose of ribs in human anatomy?

The primary purpose of the ribs in human anatomy is to protect the thoracic organs, particularly the heart and lungs. The rib cage forms a bony structure that encases these vital organs, providing a shield against external trauma and helping to maintain their position within the thoracic cavity. The design of the rib cage allows it to absorb impacts and distribute forces that could otherwise injure these sensitive organs.

While supporting the spine, facilitating breathing, and providing anchor points for muscles are also functions of the ribs, these roles are secondary compared to their primary function of protection. The arrangement of the ribs, along with the sternum and vertebrae, creates a stable and secure enclosure that is essential for the overall health and safety of the thoracic organs.