4. What are the bones of the backbone also called? A skull B. pelvic bone C spinal column D. ribs 5. What is the important job of the skull? A. it protects the lungs and heart B. It protects the skin. C. It protects the spinal Cord D. It protects the brain and the eyes. 6. What do the ribs protect? A. the eyes B. the heart and lungs C. the kidneys D. the stomach and liver