Which statement about the bones of the skull is false?

The statement regarding the bones of the skull that is identified as false pertains to the absence of fissures in the bones and the presence of foramina. In fact, the skull bones do indeed contain both foramina and fissures. Foramina are openings that allow nerves and blood vessels to pass through, while fissures are narrow splits or clefts that may also permit the passage of structures. The presence of these fissures is significant as they facilitate important connections between different parts of the skull and its features, such as the optic fissure or the superior orbital fissure.

In contrast, the other statements are accurate: certain skull bones, particularly in areas such as the paranasal sinuses, are covered with a mucous membrane to help humidify and filter air. The facial bones support structures that interface with the digestive system, such as the mouth. Additionally, the mandible is the only bone in the skull that is moveable, allowing for vital functions such as chewing and speaking. This understanding emphasizes the complexity of the skull's anatomy and its various functions.