Skull Facial Bones
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What are the 2 divisions of the skull? How many bones each/total | Cranial bones (8) & Facial bones (14)
Total= 22
🗑
|
||||
| What are the 2 divisions of the Cranial bones? | The Calvaria (cap) & the Floor--4 bones each
🗑
|
||||
| Name the 4 Calvaria Cranial bones: | Frontal; Occipital; R. & L. Parietal
🗑
|
||||
| Name the 4 Floor Cranial bones: | Ethmoid; Sphenoid; R. & L. Temporal
🗑
|
||||
| What is the composition of the Calvarium Bones: | Diploe--inner spongy/cancelleous layer separating 2 outer plates of compact cortical bone
Has Meningeal Grooves (narrow branchlike grooves which cover the internal surface of the bones (=sm grooves)
Sulci-larger channels which lodge blood vessels(large
🗑
|
||||
| What are the 3 regions of the Floor of the Skull? How are they divided? | ANTERIOR Cranial Fossa--Frontal/L. wing Sphenoid MID Cranial Fossa--L. Wings Sphenoid to Apices of Petrous Ridges POSTERIOR Cranial Fossa--Deep depression posterior to petrous ridges thru occipital bone
🗑
|
||||
| What is the thickest part of the skull & found on what bone? | The Petrous Ridges on the Temporal Bone
🗑
|
||||
| Name the 14 Facial Bones: | 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
🗑
|
||||
| Do the 2 Nasal bones articulate with the Lacrimal bones? | No. They articulate with each other, a strip of maxilla, & the frontal bone
🗑
|
||||
| What bones make up the majority of the hard pallate? | The 2 Maxilla bones
🗑
|
||||
| What bones comprise our cheek bones? | The R. & L. Zygomatic bones (Lateral to the Maxilla & part of the lateral orbit; has 3 processes)
🗑
|
||||
| What are the purpose of the nasal conchae? Are they considered Facial or Cranial bones? | 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)
🗑
|
||||
| Where are the Palantine bones located? | Just anterior to the soft palate ("L" shaped)
🗑
|
||||
| What are the articulations of the Vomer? | Meets with the Maxilla in the front & the Ethmoid Perpendicular Plate in the back
🗑
|
||||
| What are the classifications of sutures? | Structural=Fibrous (immoveable)
Functional=Synarthroidal
🗑
|
||||
| What are sutures? | Joints that connect the cranial & facial bones
🗑
|
||||
| What are the 5 main sutures of the skull? | CORONAL--between frontal/parietal bones; SAGITTAL--top of head between 2 parietal bones; 2 SQUAMOSAL--between temporal/parietal bones R/L; LAMDOIDAL--between occipital/parietal bones
🗑
|
||||
| What are the 6 Sutural Junctions? | BREGMA--coronal/sagittal suture junction; LAMBDA--sagittal/lambdoidal; 2 PTERION--Anterior junction of the squamosal,parietal, & sphenoid; 2 ASTERION--Posterior junction of Squamosal: occipital, parietal, mastoid portion of temporal bone
🗑
|
||||
| What are Fontanels? How many? | Areas of incomplete ossification in Infant skulls (soft spots).
6 Total at the suture junctions
🗑
|
||||
| At what age is Adult cranial size usually reached? | 12 years old
🗑
|
||||
| At what age range is the skull developing? | age 1-5
🗑
|
||||
| What are the names of the sutural junctions before closure (when they are still Fontanels)? | Anterior (Bregma)
Posterior (Lambda)
2 Mastoid (Asterion)
2 Sphenoidal (Pterion)
🗑
|
||||
| What are the 3 temporary sutures in infants visible on radiographs? | Metopic--extends vertically along midline of frontal bone; 2 Mendosal--pass obliquely upward on the back of the occipital bone
🗑
|
||||
| What does it mean if an infant's fontanels are sunken in? | Dehydration or drop in BP
🗑
|
||||
| What does it mean if an infant's fontanels are bulging? | Too much cranial pressure
🗑
|
||||
| What is Craniostosis ("Cloverleaf")? | When sutures prematurely go away. It inhibits brain growth--may need surgery to re-open. Can cause Microcephalus
🗑
|
||||
| What is Acephalus? | No Skull
🗑
|
||||
| What is Dicephalus or Bicephalus? | 2 heads (siamese twins)
🗑
|
||||
| What is Macrocephalus? | Big head. Can also have Hydrocephalus (water).
🗑
|
||||
| What is Hydrocephalus? | Water in the head.
🗑
|
||||
| What is Microcephalus? | Small head--can be caused by craniostosis.
🗑
|
||||
| What is Cleft-Palate? | Deviation in the palatine bone (no bone).
🗑
|
||||
| Describe the Anterior Cranial Fossa & what it contains: | Extends from the anterior frontal bone to the lesser wings of the sphenoid.
Houses the frontal lobes of cerebrum
🗑
|
||||
| Describe the Middle Cranial Fossa & what it contains: | 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)
🗑
|
||||
| Describe the Posterior Cranial Fossa & what it contains: | A deep depression posterior to the petrous ridges.
It protects the cerebellum, pons, & medulla oblongata (where spinal cord passes).
🗑
|
||||
| What are the 6 ASPECTS of the skull? | Frontal (anterior); 2 Lateral; Posterior (occipital); Vertex (crown--from top looking down); Basal (Inferior surface--looking up from underneath)
🗑
|
||||
| What is morphology? | 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.
🗑
|
||||
| Describe the typical skull & what it is called: | Mesocephalic:
Petrous Pyramids project anteriorly & medially 47° from MSP
(Petrous pyramids=thickest portion of skull --on temporal bone)
🗑
|
||||
| Describe the Bracycephalic skull: | Petrous pyramids project anteriorly & medially 54° from MSP (Football head/wide-side to side) (+7 of typical)
🗑
|
||||
| Describe the Dolichocephalic skull: | 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).
🗑
|
||||
| Why must skull morphology be considered in positioning? | 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)
🗑
|
||||
| Define Vomer: | Plow
🗑
|
||||
| Define Lacrima: | Tear
🗑
|
||||
| Define Aveoli: | Tooth socket (or air sac in lung)
🗑
|
||||
| When discussing a bone, what does sagittal refer to? | Flat part of bone
🗑
|
||||
| What are the 2 purposes of the Facial bones? | 1. To provide structure, shape, & support for the face. 2. Form protective housing for upper ends of Respiratory & Digestive tracts.
🗑
|
||||
| Which skull suture is a pair? | Squamosal
🗑
|
||||
| Which 2 sutural junctions are pairs? | The Pterion (anterior) & the Asterion (posterior).
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
RadGirl13
Popular Radiology sets