Skull Anatomy
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| List the eight cranial bones. | R/L parietal bones, Frontal bone, Occipital bone, R/L temporal bones, sphenoid, ethmoid
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| List the 14 facial bones. | R/L nasal, R/L lacrimal, R/L maxillary, R/L palantine, mandible, vomver, R/L nasal conchae, R/L zygomatic
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| List the four main sutures in the skull. | coronal, sagittal, lambdeoidal, squamosal
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| Junction of the parietal bone, squamosal suture and the greater wing of the sphenoid. | Pterion
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| Junction of coronal and sagittal sutures. | Bregma
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| What are the three regions of the base of the skull (cranial floor)? | anterior, middle, posterior cranial fossas
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| What bone is the cribiform plate located on? | Ethmoid bone
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| Lambda | Junction of sagittal and lambdoidal suture
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| What bone is the sella turcica located on? | Sphenoid bone
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| Asterion | Junction of the occipital bone, parietal bone and mastoid portion of the temporal bone.
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| Perpendicular plate is located on the ______. | ethmoid bone
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| What bone contains the pterygoid processes? | Sphenoid bone
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| Supraorbital forament | Hole located on frontal bone; above the orbits
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| Raised rounded portion found on frontal bone. | Frontal eminence
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| Raised portion located between the cribiform plate and found on the ethmoid bone. | cristi gali
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| AKA eyebrow | supracilliary arches
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| Forament rotendum | foramen located on sphenoid bone
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| What are the two types of cranial bones? | calvaria and floor
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| Which bones are located in the calvaria? | 4 bones -frontal, occipital, R/L parietal
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| Which bones are located in the floor? | 4 - ethmoid, sphenoid, occipital, R/L temporal
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| How many total bones are located in the skull? | 22
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| What are the six aspects of the skull? | frontal (anterior), lateral (2), posterior (occipital), vertex (crown), basal (inferior surface)
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| Which suture is the only paired one? | squamosal suture
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| What are the four foramen found in the sphenoid bone? | foramen rotundem, foramen ovale, foramen lacerum, foramen spinosum
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| What are the most dense portions of the skull? | petrous portions
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| Largest foramen in the skull. | foramen magnum
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| Soft spongy tissue between compact bone. | diploe
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| Areas of incomplete ossification in infant skulls. | Fontanels
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| A typical skull is termed ________. | Mesocephalic
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| Be able to locate the following: glabella, inner canthus, outer canthus, nasion, infraorbital margin, acantion, gonion, mental point, EAM, Auricular point, Tope of ear attachment | Look at diagram
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| Smooth elevation between the superciliary carches is the ________. | glabella
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| Rounded elevation on the frontal bone. | frontal eminence
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| Opening for nerves and blood vessels found in the center of the supraorbital margin. | supraorbital foramen
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| Nasion | midpoint of the frontonasal suture
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| Horizontal portion of the ethmoid bone | cribiform plate
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| Thick conical process arising from the cribiform plate. | cristi gali
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| Perpendicular plate | vertical portion of the ethmoid bone
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| Air cells in ethmoid | contained within the labyrinths; aka ethmoidal sinuses
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| Scroll shaped processes projecting inferiorly from labyrinths | superior and inferior nasal conchae
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| What bones does the ethmoid bone articulate with? | frontal and sphenoid
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| What bones does the frontal bone articulate with? | r/l parietal, sphenoid, and ethmoid bones
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| How many parietal bones are there? | two
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| Prominent bulge on parietal bone | parietal eminence
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| Which bones do the parietal bones articulate with? | frontal, temporal, occipital, sphenoid, opposite parietal
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| Irregularly wedged shaped bone that resembles a bat with wings. | Sphenoid bone
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| The sphenoid bone consists of : | two greater wings, two lesser wings, body, two pterygoid processes
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| Superior surface of sphenoid contains a deep depression called the ______. | sella turcica
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| Which portion of the skull is measured due to it being the widest point of the head? | parietal eminence
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| What gland sits in the sella turcica? | pituitary gland
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| The sella turcica is bound anteriorly by the ________ and posteriorly by the _____. | tuberculum sellae and dorsum sellae
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| Where is the posterior clinoid processes located? | Located on the dorsum sellae
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| Slanted area posterior and inferior to dorsum sellae. | clivus
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| The _____ _____ extends across the anterior portion of the tuberculum sellae. | optic groove
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| Opening of the optic canal. | optic foramen
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| Comes off of the lesser wings and tuberculum sellae. | anterior clinoid process
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| Bone located at the posteroinferior part of the skull. | occipital bone
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| Where is the pons supported? | In the clivus
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| What are the four parts of the occipital bones? | squama, two occipital condyles, basilar portion
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| Prominent process located between the squama and the foramen magnum externally. | external occipital protuberance
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| What is another term used instead of external occipital protuberance? | inion
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| The occipital condyles articulate with the ____. | atlas of the cervical spine
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| Found at the anterior ends of condyles and transmit the hypoglossal nerves. | hypoglossal canals
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| With what bones does the occipital bone articulate with? | r/l parietal, r/l temporal, sphenoid and atlas of c spine
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| Which portion of the temporal bones contains the organs of hearing and balance? | petromastoid portion
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| Thin upper portion of the temporal bone | squamous portion
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| The ________ process of the temporal bone articulates with the zygomatic bone of the face. | zygomatic process
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| The mandibular fossa receives the condyle of the mandible to form the ______. | TMJ; temporomandibular joint
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