Skull Marking Flashcards
(23 cards)
what bones are the skull composed of
8 cranial bones
14 facial bones
fontanelles
formed from fibrous membranes located between unfused skull bones in newborns; gives skull flexibilty and for rapid growth
anterior fontanelles
located where frontal and parietal bones meet
posterior fontanelle
located where the occipital bone and two parietal bones meet
sphenoid fontanelle
located where the frontal bone, temporal bone, anterior tip of the parietal bone, and the greater wing of the sphenoid bone meet
mastoid fontanelle
located where the occipital, parietal, and temporal bones meet
sutures
immovable joints formed between most articulating bones of the adult skull; example of improper suture formation is cleft palate
coronal suture
between frontal and parietal bones
sagittal suture
between two parietal bones
lambdoid suture
between parietal and occipital bone
squamous suture
between the temporal and parietal bones
intermaxillary suture
between the two maxillary bones
temporal process
a process on the zygomatic bone that articulates with the zygomatic process of the temporal bone
zygomatic process
a slender process on the temporal bone forming part of the zygomatic arch where it articulates with the zygomatic bone
external acoustic meatus
opening to the auditory canal of the ear; located on temporal bone
external occipital protuberance
palpable midline projection on the occipital bone
temporal lines
slightly raised ridge across parietal and frontal bone surfaces; attachment site for temporalis muscle
supraorbital foramina
openings in the frontal bone, above each orbit, which transmit the supraorbital nerve and artery
infraorbital foramina
openings in the maxilla that transmits blood vessels and nerves
optic foramina
round openings in sphenoid bone for cranial nerve 2 (optic nerve) to pass
perpendicular plate of ethmoid bone
the inferior, medial portion of the ethmoid bone; forms the superior portion of the nasal septum
middle nasal conchae
two projections of the ethmoid bone that form the middle, lateral wall of nasal cavity; the superior nasal conchae projections of the ethmoid bone are not visible from this anterior skull view
inferior nasal conchae
two bones forming the inferior, lateral wall of nasal cavity
