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28 Cards in this Set
- Front
- Back
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Synarthrosis
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articulation without a joint cavity
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Synchondrosis
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catilaginous union
(sphenobasilar symphysis) |
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Syndesmosis
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ligamentous union
(petrosphenoid ligament) |
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Diarthrosis
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articulation with a joint cavity
(temporomandibular joint) |
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serrated suture
- type and ex |
saw-toothed
-sagittal suture |
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Squamous
-type and ex |
scale like
- squamoparietal suture |
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Harmonic
-type and ex |
edge to edge
- lacrimoethmoidal suture |
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Gomphosis
- type and ex |
peg and socket
- greater wing of sphenoid and body |
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Beveling of Sutures
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slope of cranial articular surface in relation to the inner and outer table of bone
- internal or external bevels |
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Cranial Rhythmic Impulse phase
Inhalation SBS- Midline Bones- Sacrum- Paired Bones- |
SBS - Rises
Midline bones- Flexion (sacrum = counternutation) Paired Bones- External Rotation |
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Cranial Rhythmic Impulse Exhalation
SBS- Midline bones- Sacrum- Paired bones- |
SBS- Falls
Midline bones- extension Sacrum - Nutation Paired Bones- internal rotation |
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Midline Bones
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Sphenoid
Occiput Vomer Ethmoid Sacrum |
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Midline Bone motions
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Flexion
Extension |
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Paired Bones
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Parietals
Frontals Temporals Zygomae Maxillae Nasals Lacrimals Palatines |
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Paired Bones motions
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external rotation
internal rotation |
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sphenoid transverse axis is located
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anterior to and on the level with the floor of the sella turcica
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Occiput tranverse axis is located
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above the jugular processes of occiput at the level of SBS
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what makes up the reciprocal tension membrane
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Falx Cerebri
Tentorium Cerebelli |
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Changes in the vault with SBS Flexion
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- Cranial vault widens (palate widens and flattens)
- AP diameter decreases - Superior- inferior diameter decrease - Transverse diameter increase |
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Changes in the vault with SBS Extension
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- Cranial vault narrows (palate narrows and heightens)
- AP diameter lengthens - Superior -inferior diameter lengthens - Transverse diameter shortens |
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Temporal Bones motion is influenced by
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occiput
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temporal bone axis of motion
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- through the petrous ridge
- converges anteriormedially |
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temporal bones motions
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external rotation
internal rotation |
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parietal bones axis of motion
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- 2 which converge anteriorly
- a point lateral to the bregma on the coronal border in posteriolateral direction through the parietal eminence |
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parietal bones motion
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external rotation
internal rotation |
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Frontal Bone axis of motion
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from center of each orbital plate through frontal eminence
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Frontal Bone motion
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external rotation
internal rotation |
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during cranial flexion the occiput moves:
sacral base moves: |
occiput: anterior/superior
sacral base: suprioposteriorly - whole sacrum moves slightly superiorly |
