Exercise 7 – Regional Anatomy I: Skull Bones

number of cranial bones

8

number of facial bones

14

ethmoid bone

found deep to nasal, lacrimal, and frontal bones

frontal bone

forms anterior and part of the superior surfaces of skull

Inferior nasal concha

2 of them; projection of bone on the inferior and medial surface of the nasal cavity

lacrimal bone

2 of them; lateral and posterior to the nasal bones, contain a depression for tear drainage

Mandible

jaw bone, inferior to maxilla, attachment for inferior row of teeth

Maxilla

2 of them; forms the anterior portion of the superior boundary of the oral cavity, attachment for the superior row of teeth

Nasal bone

2 of them; form the anterior portion of the nasal cavity

Palatine bone

2 of them; form the posterior portion of the superior boundary of the oral cavity

Parietal bone

left and right ones; form the lateral and superior portions of the skull, posterior to the frontal bone

Sphenoid bone

connects with all other cranial bones, forms part of the orbit and inferior surface of the skull

Temporal bone

left and right ones; form the lateral surface of the skull, inferior to the parietal bones and anterior to the occipital bone

Vomer

found in the lower, posterior nasal septum. can also be seen from posterior view

Zygomatic bone

2 of them; posterior to the maxillae and anterior to the temporal bone; cheek bones

occipital bone

forms the posterior and inferior surfaces of the skull

Lambdoid suture

joint between parietal and occipital bones

Sagittal suture

joint between parietal bones

coronal suture

joint between frontal and parietal bones