The cranium skull is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain caseor cranial vault Figure 1. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws. The rounded brain case surrounds and protects the brain and houses the middle and inner ear structures. In the adult, the skull consists of 22 individual bones, 21 of which are immobile and united into a single unit.
The orbit is a feature of the face and contains the globe and its supporting structures, as well as many nerves and vessels. In the adult, the orbit has a volume of approximately 30 mL, of which the globe occupies 6. It has a roof, floor, medial and lateral wall.
Head shape and upper face shape are closely related to the shape of the bony skull. Figures 1 and 2 show the bony anatomy of the face. Many anthropological landmarks, bony and soft tissue, are illustrated in Figures 3 and 4.
In anatomythe orbit is the cavity or socket of the skull in which the eye and its appendages are situated. Anatomical term created by Gerard of Cremona. The orbits are conical or four-sided pyramidal cavities, which open into the midline of the face and point back into the head.
You might notice that the muscles of facial expression are arranged around the orifices of the face: orbit, nasal cavity, mouth and ear although you wont examine these. While within the gland, it divides into 5 major divisions: T -- temporal Z -- zygomatic B -- buccal M -- mandibular C -- cervical Another nerve enters deep in the buccal area where the buccal branches of the facial nerve are found but it is a purely sensory branch of the mandibular branch of Cranial Nerve V Trigeminal. It supplies the mucous membrane inside the cheek and to the skin in this area.
The bony orbits or eye sockets are bilateral and symmetrical cavities in the head. They enclose the eyeball and its associated structures. In this article, we shall look at the borders, contents and clinical correlations of the bony orbit.
By David Terfera, Shereen Jegtvig. Some delicate bones form your beautiful face. These facial bones form the face by completing the orbits, leaving room for the nose and creating the jaw and mouth.
The orbits figs. Each orbit is shaped like a pear or a four-sided pyramid, with its apex situated posteriorly and its base anteriorly. The orbit is related 1 on its superior side to the anterior cranial fossa and usually to the frontal sinus, 2 laterally to the temporal fossa in anterior and to the middle cranial fossa posterior3 on its inferior side to the maxillary sinus, and 4 medially to the ethmoidal and the anterior extent of the sphenoidal sinuses.
The human skull is the part of the skeleton that supports the structures of the face and forms a cavity for the brain. The skull supports the musculature and structures of the face and forms a protective cavity for the brain. The skull is formed of several bones which, with the exception of the mandible, are joined together by sutures—synarthrodial immovable joints.