Also seen are the upper and lower jaws, with their respective teeth ( Figure 2). This view of the skull is dominated by the openings of the orbits and the nasal cavity. The anterior skull consists of the facial bones and provides the bony support for the eyes and structures of the face. Which bone (yellow) is centrally located and joins with most of the other bones of the skull? Anterior View of Skull Watch this video to view a rotating and exploded skull, with color-coded bones. The 22nd bone is the mandible (lower jaw), which is the only moveable bone of the skull. In the adult, the skull consists of 22 individual bones, 21 of which are immobile and united into a single unit. The rounded brain case surrounds and protects the brain and houses the middle and inner ear structures. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws. It is subdivided into the facial bones and the brain case, or cranial vault ( Figure 1). The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. Identify the bony openings of the skull.Identify the bones and structures that form the nasal septum and nasal conchae, and locate the hyoid bone.Name the bones that make up the walls of the orbit and identify the openings associated with the orbit.Define the paranasal sinuses and identify the location of each.Locate and define the boundaries of the anterior, middle, and posterior cranial fossae, the temporal fossa, and infratemporal fossa.Locate the major suture lines of the skull and name the bones associated with each.List and identify the bones of the brain case and face.Bone Tissue and the Skeletal SystemĦ.6 Exercise, Nutrition, Hormones, and Bone TissueĦ.7 Calcium Homeostasis: Interactions of the Skeletal System and Other Organ Systemsħ.5 Embryonic Development of the Axial SkeletonĨ.5 Development of the Appendicular Skeletonġ0.3 Muscle Fiber Contraction and Relaxationġ0.4 Nervous System Control of Muscle Tensionīy the end of this section, you will be able to: The Tissue Level of OrganizationĤ.3 Connective Tissue Supports and ProtectsĤ.5 Nervous Tissue Mediates Perception and Responseĥ.3 Functions of the Integumentary Systemĥ.4 Diseases, Disorders, and Injuries of the Integumentary SystemĬhapter 6. The Cellular Level of Organizationģ.2 The Cytoplasm and Cellular OrganellesĬhapter 4. The Chemical Level of OrganizationĢ.1 Elements and Atoms: the Building Blocks of MatterĢ.4 Inorganic Compounds Essential to Human FunctioningĢ.5 Organic Compounds Essential to Human FunctioningĬhapter 3. An Introduction to the Human Bodyġ.2 Structural Organization of the Human BodyĬhapter 2. If needed, closed or open reduction methods can be performed with the goal of treatment being preservation of normal facial structure, sensory function, globe position and mastication functionality.Chapter 1. On radiographic evaluation, typically with dedicated CT imaging with multiplanar reformats, the following three fracture components are generally identified:įracture of the zygomatic arch and/or diastasis of the temporozygomatic sutureįractures of the inferior orbital rim and anterior and posterior maxillary sinus walls and/or diastasis of the zygomaticomaxillary sutureįracture of the lateral orbital rim and/or diastasis of the frontozygomatic suture Additionally, the fracture components may result in impingement of the temporalis muscle, trismus (limited jaw mobility) and may compromise the infraorbital foramen/ nerve resulting in hypoesthesia (numbness) within its sensory distribution. The fracture complex results from a direct blow to the malar eminence and results in three distinct fracture components that disrupt the anchoring of the zygoma. They are the second most common facial bone fracture after nasal bone fractures. They can account for ~40% of midface fractures.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |