Term
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Definition
| 8 bones. Frontal, Parietal (2), Occipital, Temporals (2), Sphenoid, Ethmoid. |
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Term
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Definition
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Term
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Definition
| Posterolateral to the frontal bone. |
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Term
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Definition
| Most posterior bone of cranium, forms floor and back wall |
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Term
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Definition
| Sides of skull, around ear |
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Term
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Definition
| Anterior of temporal lobes, articulates with all other cranial bones |
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Term
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Definition
| Forms the roof of the nasal cavity, upper nasal septum, and part of the medial orbit walls. |
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Term
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Definition
| Forming the superior, lateral, and posterior walls of the skull |
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Term
| What is the cranial cavity? |
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Definition
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Term
| Three fossae of the calvaria |
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Definition
Anterior: Frontal and Ethmoid Bone
Middle: Temporal and Sphenoid Bone
Posterior: Occiptal bone, Parietal bones |
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Term
| Cranial bones anterior to the sphenoid |
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Definition
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Term
| Cranial Bones anterior to the temporals |
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Definition
| Sphenoid, Ethmoid, Frontal |
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Term
| Cranial bones posterior to the sphenoid |
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Definition
| Temporal, Occipital, parietal |
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Term
| Cranial bone wedged between the frontal and the sphenoid |
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Definition
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Term
| What bones articulate with the frontal bone? |
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Definition
| Parietal, Ethmoid, Sphenoid |
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Term
| Supraorbital foramina/notches |
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Definition
| Superior to the orbitals. Blood vessels and nerves pass through. |
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Term
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Definition
| Interlocking joints used to join most of the bones in the skull. |
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Term
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Definition
| Frontal bones articulates posteriorly with the parietal bone via this suture |
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Term
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Definition
| Frontal bones articulates posteriorly with the parietal bone via this suture |
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Term
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Definition
| Connects parietal bone superiorly at the cranial midline |
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Term
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Definition
| Where the parietal bones meet the occipital bone posteriorly |
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Term
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Definition
| Where a parietal and temporal bone meet on the lateral aspect of the skull. One on each side of the skull |
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Term
| Occiptal Bone, articulation? |
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Definition
| Articulates with the temporal, parietal, and sphenoid bones |
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Term
| Features of the Occipital Bone: 4 |
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Definition
| Foramen magnum, Occipital condyles, external occipital protuberance, superior nuchal line |
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Term
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Definition
| opening in base of occipital, allows spinal cord to join with brain |
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Term
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Definition
| Anterior of the foramen magnum on the exterior of the occipital |
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Term
| External occipital protuberance |
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Definition
| posterior to foramen magnum, superior to external occipital crest. Lab atlas pg 49 figure 2.5 number 24 |
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Term
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Definition
| Line superior to external occipital protuberance. Lab atlas pg 49, fig 2.5 pg 20 number 20 |
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Term
| What passes through the foramen magnum? |
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Definition
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Term
| What do the occipital condyles articulate with? |
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Definition
| First cervical vertabra , the Atlas vertebra |
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Term
| What function is served by the nuchal lines? |
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Definition
| Point of attachment for various neck muscles |
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Term
| Temporal bones: Articulation |
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Definition
| Articulates with the parietal, occipital, and the sphenoid |
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Term
| Four regions of the Temporal Bones |
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Definition
| Squamos, Tympanic, Mastoid, Petrous |
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Term
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Definition
| Zygomatic process, mandibular fossa |
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Term
| Tympanic region: Features |
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Definition
| External acoustic (auditory) meatus, styloid process |
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Term
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Definition
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Term
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Definition
| Jugular foramen, internal acoustic meatus |
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Term
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Definition
| Flared region of temporal bone, anterior superior portion |
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Term
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Definition
| Projecting joining the zygomatic (cheek) bone to the temporal bone |
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Term
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Definition
| rounded depression on the inferior portion of the zygomatic process, point where the mandible joins the cranium |
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Term
| Tympanic region: Location |
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Definition
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Term
| external acoustic (auditory) meatus |
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Definition
| canal leading to eardrum and middle ear |
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Term
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Definition
| Posterolateral to mandlible, small stake like projection. Inferior to external acoustic meatus |
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Term
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Definition
| Posterior to tympanic region. Area behind ear |
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Term
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Definition
| Bump immediately posterior to your ear |
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Term
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Definition
| Internal to the skull. Lab atlas page 48 fig 2.4 number 22 |
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Term
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Definition
| between the petrous region of the temporal bone and the occiptal bone. lateral to the foramen magnum |
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Term
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Definition
| Opening on interior of temporal bone allowing passage of cranial nerves. Superolateral to the jugular foramen |
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Term
| Bones of the zygomatic arch |
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Definition
| Zygomatic bone and zygomatic process of the temporal bone |
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Term
| Bones of the temporomandibular joint |
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Definition
| Mandibular fossa of the temporal bone and the mandibular condyle of the mandible |
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Term
| Function of the styloid process |
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Definition
| Attachment point for muscles and ligaments of the neck |
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Term
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Definition
| Air cells in the mastoid process. Infections spread from middle ear cavity, high risk area for infections spreading from the throat |
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Term
| Structures located in the petrous region |
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Definition
| Jugular foramen, carotid canal, internal acoustic meatus, foramen lacerum |
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Term
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Definition
| Anterior to jugular formaen, lateral of sphenoid. lab atlas page 48 fig 2.4 #12 |
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Term
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Definition
| Jagged opening between the petrous temporal bone and the sphenoid providing passage for a number of snall nerves and for the internal carotid artery to enter the middle cranial fossa. lab atlas pg 48 fig 2.4 #11 |
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Term
| What bones form the margins of the jugular foramina? |
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Definition
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Term
| What passes through the internal acoustic meatus? |
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Definition
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Term
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Definition
| Greater wings, lesser wings, body, pterygoid processes, sella turcica, optic canals, superior orbital fissure |
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Term
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Definition
| Most lateral portions. Lab atlas pages 49/50 fig 2.6/2.7 |
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Term
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Definition
| Bat shaped portions, superior to sella turcica. Lab atlas pages 49/50 fig 2.6/2.7 |
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Term
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Definition
| Central part of sphenoid. Between greater wings, posterior and inferior to lesser wings |
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Term
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Definition
| Most inferior "wings" of sphenoid |
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Term
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Definition
| Frontal "saddle shaped" prominence, houses enclosure for pituitary gland. Lab atlas pages 49/50 fig 2.6/2.7 |
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Term
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Definition
| Closest holes to lesser wing anteriorly |
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Term
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Definition
| long slit, between greater and lesser wing |
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Term
| Why is the sphenoid bone considered the keystone of the cranium? |
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Definition
| Center wedge that articulates with all other cranial bones |
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Term
| In what part of the bone are the sphenoid sinuses located? |
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Definition
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Term
| What endocrine gland is partially enclosed and protected by the sella turcica? |
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Definition
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Term
| What is the common name for the sella turcica? |
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Definition
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Term
| What is the functional significance of the pterygoid processes? |
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Definition
| Anchor the pterygoid muscles important for chewing |
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Term
| What passes through the optic canal and superior orbital fissures? |
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Definition
| Optic/Cranial nerves. Used to control eye movement |
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Term
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Definition
| Cribriform plates, olfactory foramina, crista galli, perpendicular plate, lateral masses, superior and middle nasal conchae, orbital plates |
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Term
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Definition
| Plates next to the crista galli, helps form roof of the nasal cavities and the floor of the anterior cranial fossa. Lab atlas pg 54 |
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Term
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Definition
| Holes in the cribiform plates, allow olfactory nerves to pass from the smell receptors in the nasal cavities to the brain. Lab atlas pg 54 |
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Term
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Definition
| triangular process. "rhino horn" of ethmoid bone |
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Term
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Definition
| Inferior to crista galli, midline bone which divides nasal cavity into left and right halves. Lab atlas pg 54 |
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Term
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Definition
| Lateral of perpendicular plate. Lab atlas pg 54 |
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Term
| Superior and middle nasal conchae |
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Definition
| Part of the lateral masses. Laterally proximal to the perpendicular plate. Lab atlas pg 54 |
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Term
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Definition
| Most lateral surfaces of the lateral masses. Contribute to the medial walls of the orbits. Lab atlas pg 54 |
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Term
| What passes through the small holes in the cribriform plates? |
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Definition
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Term
| What are the olfactory foramina and where are they located? |
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Definition
| Located in the cribriform plates, are holes that allow olfactory nerves to pass from smell receptors in the nasal cavities to the brain |
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Term
| Crista galli, common name and function |
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Definition
| Rooster's comb. Outmost covering of the brain attaches to the crista galli, and helps secure the brain in the cranial cavity |
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Term
| What membrane is anchored to the crista galli? |
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Definition
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Term
| What part of the ethmoid bone contains the ethmoid sinuses? |
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Definition
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Term
| What part of the ethmoid bone forms a portion of the nasal septum? What part of the nasal septum? |
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Definition
| Superior part of the Perpendicular plate. Superior parts divides the nasal cavity into right and left halves |
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Term
| Nasal Conchae: Structure and function |
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Definition
Structure: Coiled bones (turbinates)
Function: TO spin aire in the nose to trap more dust in the mucus membrane of the nose and to warm and moisten air |
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Term
| How many pairs of nasal conchae are present in the nasal cavity? How many are ethmoidal? |
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Definition
| 3 pairs. 2 pairs are ethmoidal |
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Term
| Which surfaces of the ethmoid bone contribute to the medial walls of the orbits? |
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Definition
| Lateral surfaces of the lateral masses |
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Term
| Sutural bones. What are they and where found? |
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Definition
| Tiny irregulary shaped bones or bone clusters that appear within sutures most often in the lambdoid suture. Structurally not important, number varies, and not all skulls exhibit them. |
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Term
| Facial bones: How many and what are they? |
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Definition
| 14 bones. 6 paired 2 unpaired. 6 paired: maxillae, zygomatics, nasals, lacrimals, palatines, inferior nasal conchae. unpaired: manidble and vomer |
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Term
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Definition
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Term
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Definition
| Articulates with all other facial bones except mandible, forms the floor and medial portion of the rim of the orbit, walls of the nasal cavity, and anterior roof of the mouth |
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Term
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Definition
| Cheek bones, Forms zygomatic arch |
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Term
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Definition
| Forming the bridge of the nose midway between orbits |
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Term
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Definition
| Approx eyeglass nosepad size. Posterior to where nose pads on glasses rest in orbitals. |
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Term
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Definition
| Back portion of the hard palate |
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Term
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Definition
| Bone above upper lip. Posterior to nasal holes |
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Term
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Definition
| Largest conchae, lies laterally to the tip of the vomer |
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Term
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Definition
| Body, ramus, coronoid process, mandibular condyle, alveolar margin, mandibular foramina, mental foramina |
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Term
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Definition
| lower part of lower jaw and chin |
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Term
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Definition
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Term
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Definition
| anterior process of upper lower jaw |
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Term
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Definition
| posterior process of upper mandible |
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Term
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Definition
| where teeth socket into skull (gum line) |
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Term
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Definition
| one on the medial surface of each ramus (inside of the lower jaw) |
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Term
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Definition
| below the alveolar margin of the lower set of teeth anteriorly |
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Term
| What part of the mandible forms the chin? |
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Definition
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Term
| What function is served by the coronoid process? |
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Definition
| Attachment point for the muscles that elevate the lower jaw |
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Term
| What does the mandibular condyle articulate with? |
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Definition
| The mandibular fossa of the temporal bone |
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Term
| What structures or parts of the face are innervated by the nerves that pass through the mandibular foramina? |
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Definition
| The teeth sensation in the lower jaw (nerves) |
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Term
| What structures or parts of the face are innervated by nerves that pass through the mental foramina? |
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Definition
| Blood vessels and nerves to pass to the skin of the chin and lower lip |
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Term
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Definition
| Alveolar margin, Palatine process, Frontal process, maxillary sinus, zygomatic process, infraorbital foramen |
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Term
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Definition
| anterior portion of the hard palate |
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Term
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Definition
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Term
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Definition
| regions that flank the nasal cavity laterally |
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Term
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Definition
| attaches maxillae to zygomatic bones |
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Term
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Definition
| anterior to zygomatic process, allows infraorbital nerve t(a continuation of the maxillary nerve) and artery to reach the face |
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Term
| Bones posterior to the palatine processes of the maxillae? |
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Definition
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Term
| What bones articulate with the nasal bones? |
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Definition
| Frontal bone superiorly, maxillary bones laterally, perpendicular plate of the ethmoid bone posteriorly |
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Term
| In a living person, what is the inferior surface of the nasal bones attached to? |
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Definition
| The cartilages that form most of the skeleton of the extended nose |
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Term
| What structure is housed in the lacrimal fossa? |
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Definition
| Lacrimal sac, part of the passageway that allows tears to drain from the eye surface into the nasal cavity |
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Term
| What bones articulate with the lacrimal bones? |
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Definition
| Frontal bone superiorly, ethomid bone posteriorly, maxillae anteriorly |
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Term
| What part of the palatines forms part of the hard palate? |
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Definition
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Term
| What part of the nasal septum is formed by the vomer? |
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Definition
| the bony portion inferiorly |
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Term
| The stylohoid ligaments connect the hyoid bone to the _____ processes of the ____ bones of the skull |
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Definition
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Term
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Definition
| Bony cavities in which the eyes are firmly encased and cushioned by fatty tissue |
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Term
| What bones form the orbits? |
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Definition
| Frontal, sphenoid, zygomatic, maxilla, palatine, lacrimal, and ethmoid bone |
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Term
| What bones/parts form the roof of the nasal cavity? |
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Definition
| Cribiform plate of the ethmoid |
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Term
| What bones/parts form the lateral walls of the nasal cavity |
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Definition
| superior and middle conchae of the ethmoid bone, perpendicular plates of the palatines bones, and inferior nasal conchae |
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Term
| What bones/parts for the floor of the nasal cavity? |
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Definition
| Palatine processes of the maxillae and palatine bones |
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Term
| What bones/parts form the nasal septum of the nasal cavity? |
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Definition
| Vomer interiorly, perpendicular plate of the ethmoid |
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Term
| What are paranasal sinuses? |
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Definition
| Cluster of sinuses around the nasal cavity |
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Term
| What functions are served by the paranasal sinuses? |
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Definition
| Lighten the skull and increase resonance of the voice. Moisten and cleanse air. Much formed in sinus drains into nasal cavity |
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Term
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Definition
| Unossified remnants of fibrous membranes that complete infant skull bones |
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Term
| Are the fontanelles permanent structures? |
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Definition
| The fontanelles are replaced by bone |
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Term
| How do the fontanelles facilitate the birth process and growth of the brain in the fetus and infant? |
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Definition
| Compressing of the skull during birth. Expansion as the brain grows in the infant |
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Term
| How do the fontanelles facilitate the birth process and growth of the brain in the fetus and infant? |
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Definition
| Compressing of the skull during birth. Expansion as the brain grows in the infant |
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Term
| On a fetal skull there is a suture between the right and left halves of the frontal bone, is this suture visible on adult skulls? |
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Definition
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