Skull (complete) Flashcards
calvaria
Bones that make up the brain case:
frontal, occipital, R&L parietal, R&L temporal, sphenoid, and ethmoid bones
frontal bone
Paired “forehead” bone
frontal sinus
Sinus spaces located in the frontal bone
parietal bone
Paired bone; forms the dorsolateral part of the calvaria
occipital bone
Forms the caudal wall of the calvaria
occipital condyle
Large condyles of the occipital bone; located on either side of the foramen magnum
foramen magnum
Ring which surrounds the spinal cord; hole in the bottom of the skull
temporal bone
Extends from the zygomatic arch to the occipital lobe; ventrolateral to the parietal bone
zygomatic process
Rostral part of the zygomatic arch
zygomatic arch
Includes the temporal process and the zygomatic process; forms the ventrolateral eye socket
petrosal part
Caudoventral portion of the temporal bone; incloses the inner ear; seen from the medial aspect of a sagittal section
tympanic bulla
Bulbous enlargement of the ventral portion of the temporal bone; encloses the middle ear
external acoustic meatus
Dorsolateral opening of the temporal bone; boney ear canal
cribriform plate
Part of the ethmoid bone which separates the nasal cavity from the calvaria; lacelike structure
incisive bone
Forms the rostral portion of the face; holds incisors; and forms the hard palate
nasal bone
Forms the bridge of the nose and roof of the nasal cavity
nasal cavity
Facial portion of the respiratory passages
nasal aperture
Formed by the nasal and incisive bones; opening to the nasal cavity
nasal septum
Separates the the nasal cavity vertically
ventral nasal conchae
Several elaborate “scrolls” attached to the maxilla
dorsal nasal conchae
Single “scroll” attached to the cribriform plate
ethmoidal (conchae) labyrinth
Boney portion of the nasal conchae
dorsal nasal meati
Space between the nasal bone and the dorsal nasal concha
ventral nasal meati
Space around the ventral nasal conchae
middle nasal meati
Small space between the dorsal and ventral nasal conchae
common nasal meati
Space on either side of the nasal septum
orbit
Cavity in the skull where the eyeball sits
orbital ligament
Lateral margin of the orbit; connects zygomatic bone to zygomatic process of the frontal bone
pterygopalatine fossa
Ventral to the orbit; blend of several bones; attachment point of the pterygoid muscles
maxilla (maxillary bone)
Upper “jaw bone”
maxillary recess (sinus)
Space between the the maxilla and ethmoid bones
infraorbital canal (foramen)
Canal in the maxilla on the dorsal surface
hard palate
Composed of several bones: palatine, maxillary, and incisive bones; “roof of the mouth”
mandible
Lower portion of the “jaw bone”
body of the mandible
Horizontal portion of the mandible; holds the teeth
ramus of the mandible
Perpendicular to the body of the mandable; “neck” of the mandible
mandibular foramen
Located on the medial side
mandibular canal
Canal bounded by the mandibular foramen (medial) and three mental foramina (lateral)
mandibular symphysis
Ligament which joins to both mandibles
temporomandibular joint
Attachment of the condylar process of the mandible and the temporal bone
hyoid apparatus
Serves as an attachment point for muscles which control the tongue and larynx
incisor teeth
Most rostral teeth; contained in the incisive bone; 3 per side
canine teeth
Large tooth caudal to the incisors
premolar teeth
Located caudal to the canine tooth; four on both upper and lower jaws
molar teeth
Just caudal to the premolars; two on the upper and 2-3 on the lower jaw
alveolus of tooth
Cavity in the jaw where the teeth are located
