Bones and Cartilages
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Parietal Bone
The parietal bone creates the major portion of the vault of the skull and is a curved plate of bone. It’s quadrilateral in shape. Parts The parietal bone has: 2 surfaces: external and internal. 4 edges: superior (sagittal), inferior, anterior and posterior. 4 angles: frontal, sphenoidal, occipital
Lacrimal Bone
The lacrimal bone a.k.a. os lacrimale is quadrangular and it is the smallest of all bones of the skull. In relation to development, the lacrimal bone is basic as it goes through two stages of development and is created with connective tissue at its center. Structure The
Zygomatic Bone (Cheek Bone)
The zygomatic bone is also referred to as malar bone because it forms the visibility of the cheek that is termed mala in Latin. Parts The zygomatic bone is composed of the following 3 parts: A body 2 processes: frontal and temporal. Body It presents 3 surfaces,
Nasal Bone
Each one of the nasal bone has four bones, which create joints: two cranium as well as two facial bones. The cranium bones: the ethmoid and frontal. The facial bones: the maxilla and opposite nasal. Each nasal bone has four borders: the superior, inferior, lateral, and medial.
Frontal Bone
The frontal (L. frontal = brow) bone lies in the region of the brow. Its shape is similar to a shell. Parts It includes the following 6 parts: Squamous part (main part) Nasal part 2 orbital plates 2 zygomatic processes Squamous Part The orbital plate joins on
