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AP 2 - Facial Bones

Skull Anatomy

QuestionAnswer
The Facial Skeleton job is to provide what? A protective housing for the upper respiratory and digestive organs
The Facial Skeleton in combination with select Cranial Bons, form the cavities for the? Eyes, Nose and Mouth
How many paired Facial Bones form the Visceral Skeleton? 14
The two single Facial Bones? Mandible and Vomer
The two paired bones which form the Bridge of the Nose? Nasal Bones
The Nasal Bones are located at ________ Plane Midsagittal
The Nasal Bones external Landmark is ______ Nasion
Suture that separates the Frontal Bone and the Nasal Bones? Frontonasal Suture
Cartilaginous portion of the Nasal Septum? Ethmoid
__________ Lateral Projections of the Nasal Bones are performed Bilateral
A single, plow-shaped bone situated in the Midsagittal Plane on the floor of the Nasal Cavity? Vomer
The surfaces of the Vomer is marked with furrow-like depressions for blood vessels of the nose, which is usually the source of what? Nose Bleeds
Located on the Superior border of the Vomer? Two wings or Alae
Located on the Posterior Border of the Vomer? Rostrum or Spine of the Sphenoid Bone
The bony Nasal Septum is formed by the what? Perpendicular Plate of Ethmoid (superior) and Vomer (inferior)
A deviated Septum usually involves ______ and its articulation with the cartilaginous portion of the ________ _______ Vomer; Septal Cartilage
The Parietocanthial Projection (Water's Method) of the Vomer demonstrates the what? Bony Nasal Septum
Two curved or scroll-like bones attached to the inferior lateral walls of the Nasal Cavity? Inferior Nasal Conchae
The Superior and Middle Nasal Conchae of the Ethmoid Bone and the Inferior Nasal Conchae are collectively called the _________? Turbinates
What divides the Nasal Cavity into superior, middle and inferior nasal meatuses (openings)? Turbinates
What is the purpose of the Turbinates? To warm and filter air before it reaches the Lungs
When the mucous membrane of the Turbinates become inflamed with allergies or other nasal problems, what is the outcome? Airflow restriction in the Nasal Cavity
The PA Axial Projection (Caldwell Method) of the Inferior Nasal Conchae visualizes what? The Middle and Inferior Nasal Conchae within the Nasal Cavity
Two small paired bones located within the anterior and medial portion of the Orbit? The Lacrimal Bones
The smallest most fragile bones of the Skull? Lacrimal Bones
The Lacrimal Bones help to form a small portion of the what? Medial floor and wall of the Orbit
The Maxilla and Lacrimal bone on each side form the ______ _____ to accommodate the ______ ______ or ____ ____. Lacrimal Fossa; Lacrimal Sacs; Tear Ducts
The two paired bones which form the upper jaw, also the largest immoveable bones of the facial skeleton? Maxillae
Each Maxilla consists of? A body and 4 processes for articulation
Located within the Body of Maxilla, these air-filled cavities are the largest of the Paranasal Sinuses? The Maxillary Sinus
The Maxillary Sinuses are also referred to as? The Antrum of Highmore
A ridge of bone surrounding external Orbit, formed by the Frontal Process fo the Maxillae? Infraorbital Margin
Formed by the Frontal Process of Maxilla and Lacrimal bones, accommodates the Lacrimal sacs or Tear Ducts? Lacrimal Fossa
An incomplete joining of the Palatine Processes of the two Maxillae? Cleft Palate
What forms a spongy ridge in which the upper teeth are embedded? The Alveolar Process
The Parietoacanthial Projection (Waters Method), demonstrates what? The sutures of the Maxilla
Two thin "L" shaped bones situated in the posterior portion of the Oral, Nasal, and Orbital Cavities? Palatine Bones
Two arrow-head shaped bones located laterally on the Facial Skeleton? Zygomatic Bones
The Zygomatic Bones are also referred to as the? Malar Bones
A delicate structure which can be fractured or depressed by a blow to the cheek? Zygomatic Arch
Fracture that involves fractures of all three processes of the Zygoma causing it to be free-floating? A Tripod Fracture of the Zygoma
The Parietocanthial Projection (Water's Method) of the Zygomatic Bones demonstrates what? The processes of Zygoma
A Submentovertex Projection (SMV) of the Zygomatic Bones demonstrates what? A fracture of the Right Zygomatic Arch
The largest bone of the Facial Skeleton, forming the lower jaw, which is also the only moveable bone of the Skull? The Mandible
The Mandible consists of what two parts? Body and Ramus
Ridge of bone where the Mandible fuses after birth (approx, 1 year)? Mental Symphysis
Mental Symphysis is also referred to as? Symphysis Menti
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