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14 Cards in this Set
- Front
- Back
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Name the Midline/unpaired bones
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Cranial
- Ethmoid - Occiput - Sphenoid - Frontal Facial - Mandible - Vomer |
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Name the paired bones
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Cranial
- Parietal -Temporal - Frontal Facial - Inferior nasal concha - Lacrimal - Maxilla - Nasal - Palatine - Zygoma |
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Midline bones usually ...
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move about a transverse axis in a superior-inferior motion
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Paired bones usually ...
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move about AP axis in a lateral motion, also labeled flexion - extension
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During flexion the Sphenoid/Occiput/SBS move ...
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- Sphenoid will rotate about a transverse axis so that the alae
will move anteriorly and the motion at the SBS will be superior - Occiput will rotate about a transverse axis so that the motion at the SBS will be superior and the “bowl” of the occiput will move posterior and inferior |
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When SBS is in flexion, the ethmoid will
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move in the same direction as the occiput
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When SBS is in flexion, the vomer will
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move in the same direction as the sphenoid
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During SBS flexion the palatines will ...
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move in external rotation primarily
- internal palatine suture will more inferiorly with vomer & maxilla |
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Lateral strain is named for? Axis? Plane? Direction of bones?
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base of the sphenoid (basisphenoid)
Axes - superior/inferior Plane - transverse direction of bones is the same |
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SBS vertical strain is named for? Axis? Plane? Direction of bone?
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- direction of the basisphenoid
- transverse axes - sagittal plane - direction of bones the same - but one is in flexion while the other is in extension |
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SBS torsion is named for the.... Axis? Plane? Direction of bones?
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high wing of the sphenoid (greater wing moves cephalad during flexion)
- AP axis - Transverse Plane - bones rotate in opposite directions |
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SBS sidebending/rotation is named for ... Axis? Plane? Direction of bones?
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Concavity
- 2 parallel vertical axes for side-bending component - transverse plane - rotation component is an AP axis in a coronal plane |
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With SBS flexion the base of the sacrum will have the following motion. Sacral apex?
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base - counter nutation
apex- anterior |
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SBS extension = sacral base? Sacral apex?
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base- nutation
apex - posterior |
