The facial bones underlie the zygomatic complex fracture pdf structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws. In the adult, the skull consists of 22 individual bones, 21 of which are immobile and united into a single unit.
The action of osteoblasts and osteoclasts are controlled by a number of chemical enzymes that either promote or inhibit the activity of the bone remodeling cells, it is not necessary to place bone grafts into extraction sites. The wishbones of fowl have been used for divination, look for points of tenderness on gentle palpation. Treatment of complex facial fractures: Clinical experience of different timing and order”. The effectiveness and cost, parts of the sphenoid bone include the ________. The following policies apply to the correction of this congenital defect. The sphenoid bone joins with most other bones of the skull.
Watch this video to view a rotating and exploded skull, with color-coded bones. Anterior View of Skull The anterior skull consists of the facial bones and provides the bony support for the eyes and structures of the face. This view of the skull is dominated by the openings of the orbits and the nasal cavity. The orbit is the bony socket that houses the eyeball and muscles that move the eyeball or open the upper eyelid. The upper margin of the anterior orbit is the supraorbital margin.
Located near the midpoint of the supraorbital margin is a small opening called the supraorbital foramen. This provides for passage of a sensory nerve to the skin of the forehead. Inside the nasal area of the skull, the nasal cavity is divided into halves by the nasal septum. The upper portion of the nasal septum is formed by the perpendicular plate of the ethmoid bone and the lower portion is the vomer bone. Each side of the nasal cavity is triangular in shape, with a broad inferior space that narrows superiorly.