<prompt> Bone which is Pneumatic -a Maxillaryb Parietalc Temporald Frontale Ethmoidalbcebdeadeabde  <response>: Pneumatic bones are one which contain large air spaces lined by epithelium e.g.: maxilla, sphenoid, ethmoid, Frontal etc. They make the skull light in weight, help in resonance of voice, and act as air conditioning chambers for the inspired air.RememberMastoid is a spongy bone cancellous or trabecular bone and not pneumatic bone. 