Anatomy Skull bones
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30 terms
Terms | Definitions |
|---|---|
 Parietal Bone | either of two skull bones between the frontal and occipital bones and forming the top and sides of the cranium |
| Occipital bone | a saucer-shaped membrane bone that forms the back of the skull |
| frontal bone | the large cranial bone forming the front part of the cranium: the forehead and the upper part of the orbits |
| temporal bone | a thick bone forming the side of the human cranium and encasing the inner ear |
| coronal suture | the suture between the parietal and frontal bones of the skull |
| lacrimal bone | small fragile bone making up part of the front inner walls of each eye socket and providing room for the passage of the lacrimal ducts |
| ethmoid bone | one of the eight bones of the cranium |
| sphenoid bone | butterfly-shaped bone at the base of the skull |
| perpendicular plate | inferior projection of the ethmoid that forms the superior part of the nasal septum |
| vomer bone | forms the base for the nasal septum |
| mandible bone | Lower jaw |
| sagittal suture | the suture uniting the two parietal bones |
| squamous suture | suture on each side of the skull, separating the temporal bone and the parietal bone |
| lambdoidal suture | suture that separates parietal bones from occipital bone |
| palatine bone | either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits |
| fontanel | any membranous gap between the bones of the cranium in an infant or fetus |
| meninges | a membrane (one of 3) that envelops the brain and spinal cord |
| nasal septum | a partition of bone and cartilage between the nasal cavities |
| crista galli | vertical projection providing a point of attachment for the dura mater, helping to secure the brain within the skull |
| cribiform plate | superior surface of the ethmoid; perforated by a foramina which allows passage of the olfactory nerves, which provide sense of smell |
| maxilla | the upper jawbone in vertebrates |
| external auditory meatus | opening for the ear |
| sella tursica | where the greater and lesser wings meet at the midline and it is a hollow depression that holds the pituitary gland |
| occipital condyles | Protrusions on the back of the skull which articulates with the vertebra of the back bone |
| foramen magnum | the large opening at the base of the cranium through which the spinal cord passes |
| styloid process | extends from the base of the temporal bone |
| nasal concha | superior, middle and inferior -- nasal turbinates; mucous covered bones extending from lateral walls of nasal cavity; shaped like conche sea shells; increase mucosal surface area and enhance air turbulence in nasal cavity |
| zygomatic bone | the arch of bone beneath the eye that forms the prominence of the cheek |
| zygomatic arch | the slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal bone |
| temporal process | Articulates with zygomatic process of the temporal bone to form the zygomatic arch |
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