Stirnbein
Stirrnbein, in English commonly called the frontal bone (Os frontale), is a major bone of the skull that forms the forehead and the upper part of the eye sockets. It also contributes to the floor of the anterior cranial fossa and houses the frontal sinuses, air-filled cavities that can vary in size between individuals.
The frontal bone consists primarily of two parts: the vertical squama frontalis, which creates the forehead,
Articulations include the two parietal bones at the coronal suture, the nasal bones and maxillae medially,
Development occurs mainly through intramembranous ossification. In infants, the frontal bones are separated by the metopic