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Skull bones

skull bones

QuestionAnswer
sutures interlocking joints
mandible, lower jawbone attached by freely movable joint
supraorbital foramen (notch) opening above each orbit allowing blood vessles and nerves to pass
frontal bone forms forehead, anterior cranium, superior orbits and floor of anterior cranial fossae
glabella smooth area between eyes
parietal bones posterolateral to frontal bone forming side of cranium
saggital suture midline articulation point of 2 parietal bones
coronal suture point of articulation of parietal with frontal bones
temporal bone inferior to parietal bone on lateral skull
squamous suture point of articualtion of temporal bone with parietal bone
zygomatic process bridgelike projection joining zygomatic bone (cheekbone) anteriorly (->zygomatic arch)
mandicular fossa rounded depression on inferior surface of zygomatic process (anterior to ear); forms socket for mandibular condyle, point where mandible (lower jaw) joins cranium
external acoustic meatus canal leading to eardrum and middle ear
styloid process needlelike projection inferior to external acoustic meatus; attachment point for muscles and ligaments of neck
mastoid process rough projection inferior and posterior to external acoustic meatus; attachment site for muscles.
stylomastoid foramen tiny opening between mastoid and styloid processes through which cranial nerve VII leaves cranium2
cartoid canal opening medial to syloid process through which internal cartoid artery passes into cranial cavity
foramen lacerum a jagge dopening between petrous te,poral bone and sphenoid providing passage for a number of small nerves and for internal cartoid artery to enter middle cranial fossa
occipital bone most posterior bone of cranium, forms floor & back wall
lambdoid suture site of articulation of occipital bone and parietal bones
foramen magnum large opening in base of occipatl which allows spinal cord to join with brain
occipital condyle rounded projctions lateral to foramen magnum that articulate first cervical vertebra
hypoglossal canal opening medial and superior to occipital condyle through which hypoglossal nerve passes
sphenoid bone bat shaped bone forming anterior plateau of middle cranial fossa aross width of skull
greater wings portions of sphenoid seen exteriorly anterior to temporal and forming a part of eye orbits
superior orbital fissures jagged openings in orbits providing passage for cranial nerves III, IV, VI to enter orbit where they serve eye
lesser wings bat shaped portions of sphenoid anterior to sella turcica.
optic canal opening in base of lesser wings through which optic nerve enters orbits to serve the eyes
foramen rotundum opening lateral to sella turcica providing passage for a branch of 5th cranial nerve
foramen ovale opening posterior to sella turcica that allows passage of branch of 5th cranial nerve
crista galli (cock's comb) verticle projection providing point of attachment for dura mater, helping secure brain within skull
cribriform plates bony plates lateral to cr4ista galli through which olfactory fibers pass to brain from nasal mucosa
perpendicular plate inferior projection of ethmoid that forms superior part of nasal septum
mandible lower jawbone; articulates the temporal bones in the only freely movable joint of skull
mandibular ramus verticle extension of body on either side
mandibular condyle articulation point of mandible with mandibluar fossa of temporal bone
coronoid process jutting anterior portion of ramus; site of muscle attachment
mandibular angle` posterior point at which ramus meets body
mental foramen prominent openiong on body that transmits mental blood vessles and nerve to lower jaw
mandibular foramen this foramen presents passage of nerve involved with tooth sensation
alveolar margin superior margin of mandible, contains sockets in which teeth lie
mandibular symphysis anterior media depression indicating point of mandibular fusion
maxillary upper jawbone and part of orbits.
palatine processes form anterior hard plate
infraorbital foramen opening under orbit carrying infraorbital nerves and blood vessles to nasal region
incisive fossa LARGE BILATERAL OPENING LOCATED POSTERIOR TO CENTRAL INCISOR TOOTH OF MAXILLA AND PIERCING HARD PALATE
LACRIMAL BONE fingernail sized bones forming part of medial orbit walls between maxilla and ethmoid
lacrimal fossa opening which serves as passageway for tears
palatine bone paired bones posterior to palatine processes; form posterior hard palate and part of orbit
zygomatic bone lateral to maxilla; forms portion of face commonly claled cheekbone and forms part of lateral orbit
nasal bone small rectangular bones forming bridge of nose
vomer blade shaped bone in median plane of nasal cavity that forms posterior and inferior nasal septum
inferior nasal conchae (turbinates) thin curved bones protruding medially from lateral walls of nasla cavity
Created by: sugar9booger on 2008-06-11



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