There are flat bones inside the skull (occipital parietal, frontal nasal, lacrimal and vomer), the thoracic cage (sternum and the ribs) and the pelvis (ilium, ischium, and pubis). Flat bones guard internal organs like the heart and brain. Flat bones, that are slightly flattened, can protect the body like an http://gregoryevirz.blogs100.com/10801365/what-are-the-connections-between-arthritis-and-bone-problems