Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Ch 11 Cranium-Facial
| Question | Answer |
|---|---|
| What is skull morphology? | the shape of the head determines the layout of the internal petrous ridges - necessary for imaging accurately |
| What are the types of skull morphology and why are they important? | AVERAGE - Mesocephalic - width 75-80% of length-petrous ridges at 47' WIDE - Brachycephalic - width >80% length-petrous ridges at ~54' NARROW - Dolichocephalic - width <80% length-petrous ridges at ~40' Tech may need to adjust technique for head size |
| Name the articulations of the adult skull by type and name. | Coronal suture Lambdoidal suture Squamosal suture Sagittal suture Fibrous joints, synarthrodial-type (non-moving) |
| What are the junctions of the adult sutures called? Name them. | Pterions and asterions BREGMA - vertex of skull-sagittal and coronal sutures LAMBDA - Sagittal and Lambdoidal sutures RIGHT/LEFT PTERION -frontal/parietal/temporal bones junction RIGHT/LEFT ASTERION - Lambdoidal and squamosal suture join |
| What are the regions where ossification is slow to occur in the human skull? At what age does complete ossification occur in humans? | Fontanels; mid to late 20s possibly in the 5th decade |
| Name the fontanel that develops into the BREGMA. | ANTERIOR fontanel |
| Name the fontanels that develop into the right/left PTERIONS. | right / left SPHENOID fontanels |
| Name the fontanel that develops into the LAMBDA. | POSTERIOR fontanel |
| Name the fontanels that develop into the right / left ASTERIONS. | right / left MASTOID fontanels |
| Name the small, irregular bones that sometimes develop in the human skull. | SUTURAL or WORMIAN bones |
| How many facial bones are there? | 14 |
| Name the facial bones. | Mandible Right / left maxillae Right / left zygoma bones Right / left nasal bones Right / left lacrimal bones Right / left palatine bones Right / left Inferior nasal conchae Vomer |
| Which of the following is not a facial bone? A) middle nasal conchae B) Vomer C) Lacrimal bone D) Mandible | A) middle nasal conchae |
| What is the largest immovable bone of the face? | Maxilla |
| List the four processes of the maxilla. | A) Frontal process B) Zygomatic process C) Alveolar process D) Palatine process |
| Which aspect of the maxilla is considered the most superior? | Frontal process |
| Which soft tissue landmark is found at the base of the anterior nasal spine? | Acanthion |
| Which facial bones form the posterior aspect of the hard palate? | palatine bones |
| Which two cranial bones articulate with the maxilla? | Frontal bone and ethmoid bone |
| Which facial bones are sometimes called the cheek bones? | Zygomatic bone |
| Which of the following bones does not articulate with the zygomatic bone? A) Temporal B) Mandible C) Frontal D) Sphenoid | B) Mandible |
| Which facial bone is associated with the tear duct? | Lacrimal |
| The purpose of the _____ or _____, is to divide the nasal cavity into compartments and to circulate air coming into the nasal cavities. (include both terms) | Conchae or Turbinates |
| TRUE/FALSE The right and left nasal bones form the largest part of the nose. | FALSE Most of the nose is composed of cartilage. |
| A deviated nasal septum is most likely to occur at the junction between _____ and _____. | Septal cartilage and the Vomer |
| Name the vertical portion of the mandible. | Ramus |
| Name the chin. | Mentum |
| Name the mandibular angle. | Gonion |
| Name the point of union between both halves of the mandible. | Symphysis menti |
| Name the bony process located anterior to the mandibular notch. | Coronoid process |
| Name the horizontal portion of the mandible. | Body |
| Name the posterior process of the upper ramus. | Condyloid process |
| Name the U shaped notch on the mandible. | mandibular notch |
| The single facial bone and pair of facial bones not visible from the exterior are ______ and _____. (they are demonstrated in special views of the facial bones) | Vomer and palatine bones |
| From anterior to posterior, the cone-shaped orbits project upward at an angle of _____ and toward midsagittal plane at an angle of _____. | up 30' and in 37' |
| Which facial bone opening has the maxillary branch of the fifth cranial nerve passing through it? | Inferior orbital fissure |
| Which of the facial bone openings is formed by a cleft between the greater and lesser wings of the sphenoid? | superior orbital fissure |
| What is another term for the second cranial nerve? | Optic nerve |
| CR angles and degrees of rotation stated in positioning for basic skull projections are based on the _____ (average) skull, which has an approximate angle of _____ between the midsagittal plane and the long axis of the petrous ridge. | MESOCEPHALIC; 47' |
| The long (narrow) _____ skull has an angle of approximately _____ degrees between the MSP and petrous bone. | DOLICHOCEPHALIC; 40' |
| TRUE/FALSE Two older terms for orbitomeatal line (OML) are Reid's base line and the anthropologic base line. | FALSE These refer to the IOML |
| There is a _____ degree difference between the orbitomeatal and infraorbitomeatal lines and a _____ degree difference between the orbitomeatal and glabellomeatal line. | 7 - 8 ' (same degree of difference) |
Created by:
Larobbins
Popular Radiology sets