Skull Facial Bones
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| What are the 2 divisions of the skull? How many bones each/total | show 🗑
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| What are the 2 divisions of the Cranial bones? | show 🗑
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| Name the 4 Calvaria Cranial bones: | show 🗑
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| show | Ethmoid; Sphenoid; R. & L. Temporal
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| What is the composition of the Calvarium Bones: | show 🗑
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| What are the 3 regions of the Floor of the Skull? How are they divided? | show 🗑
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| What is the thickest part of the skull & found on what bone? | show 🗑
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| show | 2 MAXILLA--front of roof of mouth R/L 1 MANDIBLE 2 ZYGOMATIC R/L 2 PALANTINE--L shaped in back roof of mouth R/L 1 VOMER-inf port. of nasal septum 2 INFERIOR NASAL CONCHAE R/L 2 LACRIMAL R/L 2 NASAL BONES
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| show | No. They articulate with each other, a strip of maxilla, & the frontal bone
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| show | The 2 Maxilla bones
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| What bones comprise our cheek bones? | show 🗑
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| show | The nasal conchae warm/cool the air--look like scrolls
The Inferior Nasal Conchae are considered facial bones (while the Mid & Superior are considered Cranial--part of Spheniod bone)
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| show | Just anterior to the soft palate ("L" shaped)
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| show | Meets with the Maxilla in the front & the Ethmoid Perpendicular Plate in the back
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| What are the classifications of sutures? | show 🗑
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| What are sutures? | show 🗑
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| What are the 5 main sutures of the skull? | show 🗑
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| What are the 6 Sutural Junctions? | show 🗑
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| show | Areas of incomplete ossification in Infant skulls (soft spots).
6 Total at the suture junctions
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| At what age is Adult cranial size usually reached? | show 🗑
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| At what age range is the skull developing? | show 🗑
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| show | Anterior (Bregma)
Posterior (Lambda)
2 Mastoid (Asterion)
2 Sphenoidal (Pterion)
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| show | Metopic--extends vertically along midline of frontal bone; 2 Mendosal--pass obliquely upward on the back of the occipital bone
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| What does it mean if an infant's fontanels are sunken in? | show 🗑
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| show | Too much cranial pressure
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| What is Craniostosis ("Cloverleaf")? | show 🗑
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| What is Acephalus? | show 🗑
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| show | 2 heads (siamese twins)
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| show | Big head. Can also have Hydrocephalus (water).
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| show | Water in the head.
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| What is Microcephalus? | show 🗑
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| What is Cleft-Palate? | show 🗑
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| show | Extends from the anterior frontal bone to the lesser wings of the sphenoid.
Houses the frontal lobes of cerebrum
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| show | Extends from the lesser wings of the sphenoid to the apices of the petrous ridges/pyramids (part of temporal bone).
It houses the temporal lobes (lots of foramen, cortex, pituatary gland)
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| show | A deep depression posterior to the petrous ridges.
It protects the cerebellum, pons, & medulla oblongata (where spinal cord passes).
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| show | Frontal (anterior); 2 Lateral; Posterior (occipital); Vertex (crown--from top looking down); Basal (Inferior surface--looking up from underneath)
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| show | 1.The study of the forms of things, in particular.
2.The branch of biology that deals with the form of living organisms, and with relationships between their structures.
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| show | Mesocephalic:
Petrous Pyramids project anteriorly & medially 47° from MSP
(Petrous pyramids=thickest portion of skull --on temporal bone)
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| show | Petrous pyramids project anteriorly & medially 54° from MSP (Football head/wide-side to side) (+7 of typical)
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| show | Petrous pyramids project anteriorly & medially 40° from MSP. (-7 of typical) (Long from front to back; Narrow side/side; deep from vertex (crown) to base (inf. surface).
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| show | 1. Guidelines are based on Meso-cephalic size & shape. 2. Adjustments to centering & CR And/OR part angulation may be required when working with atypical skull shapes. 3. Asymmetry of outer features should be noted (ex. the nose may not always be midline)
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| show | Plow
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| show | Tear
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| Define Aveoli: | show 🗑
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| show | Flat part of bone
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| show | 1. To provide structure, shape, & support for the face. 2. Form protective housing for upper ends of Respiratory & Digestive tracts.
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| Which skull suture is a pair? | show 🗑
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| show | The Pterion (anterior) & the Asterion (posterior).
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