Flat bones are thin, flattened, and sometimes curved. Their primary function is to protect internal organs with broad protection, while also providing large surfaces for the attachment of muscles.
Skull: The cranial bones (such as the frontal, parietal, and occipital bones) are the most prominent examples of flat bones, serving to protect the brain.
Chest: While the chest contains flat bones (the sternum and ribs), in many biological contexts and standard examination questions, the skull is the most classic and frequently cited example for this classification.