Flashcards in Ch. 7 Axial Skeleton: Facial Bones Deck (12)
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1
How many bones make up the face?
14
2
List the facial bones (14)
Mandible (unpaired)
Vomer (unpaired)
2 Nasals
2 Lacrimals
2 Maxillae
2 Zygomatics
2 Palatine
2 Inferior Nasal Conchae
3
What are the paired lacrimal bones for?
Lacrimal groove is passage for duct for tears
4
What are the paired nasal bones for?
Form bridge of nose, attach to cartilages that form norse
5
What are the paired zygomatics for?
Form cheekbones
6
Maxilla
Form upper jaw (L and R)
Articulate w/ other facial bones except mandible
Alveolar process: contains teeth
Frontal processes: extends upward to reach frontal bone
Zygomatic processes: articulate w/ zygomatic bone
Infraorbital foramen: provides passage for infraorbital artery, vein, and nerve
7
Orbit
supports eyes and muscles the move eyes + fat and tear producing glands
Walls formed by frontal, sphenoid, zygomatic, maxillary, palatine, lacrimal, and ethmoid bones
8
Cranial Base
Hard palate is composed of ventral maxillary bones and palatine bone
Vomer forms inferior portion of nasal septum
9
Cleft Palate
Failure of 2 sides of palate to join during development. Severity varies
Opening between mouth and nasal cavity makes effective nursing difficult
Can be repaired surgically w/ good outcomes
10
Mandible
Largest, strongest bone in face
Body contains lower teeth; tooth sockets are on the superior border (alveolar process)
Mandibular symphysis (not visible) is where the 2 halves of the body form to join the chin (mental protuberance)
Mental foramen: opening below teeth for nerves/vessels
Condylar process: articulates w/ temporal bone to form TMJ
Coronoid process: serves as attachment site for temporalis muscle
11
Fetal/Infant Skull and Sutures
Fetal/infant skull bones not solidly joined - this allows head to deform as it passes through birth canal and allows for brain growth
Fontanelles ("soft spots"): sturdy membranous covering between cranial joints
--will fuse over time
By age 2, skull is 3/4 adult size
Between ages 6-13, face grows outward and develops more "adult" proportions
12
