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facial bones

bones of the face

bonesdescription
facial bones 2-nasal 2 maxillae 2 zygomatic 2 lacrimal 2 palantine 2 inferior nasal conchae 1 vomer 1 mandible
nasal bones 2 R+L small oblong bones that meet in the midline to form the bridge of the nose. each joins the frontal bone at the nasofrontal suture called the nasion. articulate with the frontal ethmoid and maxillary bones
maxillary bones 2 R+L unite in the midline in early life. articulate with all other facial bones except the madible
body of maxilla lateral to the nose forming the foundation of the cheek and the floor of the orbit and part of the roof of the mouth
maxillary sinuses largest paranasal sinuses. triangular shaped cavities aka antrum--empty into the nasal cavity
infraorbital foramina immediately bleow the orbital cavity allow for the passage of blood vessels and nerves to the soft tissue of the cheek
nasal spine a small bony projection found at the base of the nose formed by union of two maxillae
frontal process extends superiorly from the body just lateral to the nose and medial to the orbital cavity it articulates with the frontal bone
zygomatic process extends laterally from the body to articulate with the zygomatic bone
alveolar process extends from the body to form the sockets for the teeth
palatine process flat shelf of bone that forms the anterior 3/4 o fth ehard palate separates nasal cavity from the oral cavity
zygomatic bones 2 R+L form the most prominent portion of the cheek and lateral portion of the orbi
body of zygoma small central portion
frontal process of zygoma extends upward from the body forming the lateral margin of the orbital cavity articulates with the frontal bone
maxillary process of zygoma extends medially from the body to join with the maxilla
temporal process of zygoma extends posteriorly to join with the zygomatic process of the temporal bone to form the zygomatic arch
lacrimal bones 2 R+L thin bones located in the medial and inferior portion of the orbit
lacrimal groove lacrimal duct passes through so teas can be carried to nasal cavity
Palatine bones 2 R+L they help to form the hard palate and the lateral walls of the nasal cavity. L shaped The horizontal portion of each bone meets at the midline to form the posterior 1/4 of the hard palate
vomer lies vertically in the midline of the nasal cavity. joins with the perpendicular plate of the ethmoid to form the nasal septum. vomer rests on the hard palate
palatine bones 2, R+L, Lshaped bones they help to form the hard palate and the lateral walls of the nasal cavity. The horizontal portion of each bone metts at the midline to form the posterior 1/4 of the hard palate.
Inferior nasal conchae 2 R+L thin curled plates of bone extending from the later wall of the nasal cavity. Not part of the ethmoid like the superior and middle nasal conchae
Mandible Single bone of lower jaw. Only moveable bone in the face. Has a horizontal portion, body and two vertical portions--rami
Mandibular angle 2 r +L, rounded areas formed by the union of the body and ramus on each side. radiographic landmark--gonion
mandibular body the horizontal portion extending from angle to angle
mandibular symphysis faint vertical ridge in the midline anteriorly where the two halves of the mandible fused prior to birth.
mental protuberance the chin
mental foramina small openings on each side of the midline allowing for the passage of the mental branch of the mandibular nerve to reach the lower face
alveolar process of mandible on the upper margin of the body with 16 sockets for the lower teeth.
ramus of mandible 2 R+L, vertical extensions on each side
coronoid process Thin flat anterior process on the superior aspect of the ramus. Attatchment point for facial muscles
Created by: srahuesos