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OPP Lect 21
| Question | Answer |
|---|---|
| William G Sutherland | Noted the beveles of the sutures that vary between the two different tables of a disarticulated skull. **wrote The Cranial Bowl. |
| 5 components of Primary Respiratory Mechanism (PRM) | 1.motility (inherent motion) of brain & spinal cord. 2.Fluctuation of CSF. 3.Mobility of the intracranial and intraspinal membranes. 4.Mobility of cranial bones. 5.Involuntary mobility of the sacrum b/w the ilium (flex/ext pattern). |
| Mobility Vs. Motility | Mobility: passive secondary motion. Motility:inherent motion. |
| PRM Component 2: Fluctuation of CSF | 1.Formed in choroid plexus, 2.circulates through the ventricles and over brain & spinal cord, 3.then to subarachnoid space via cisterna. 4.reabsorbed by arachnoid granules into sinuses of the dura. |
| PRM component 3: Mobility of Intracranial and Intraspinal membranes: 2 layers of dura | 2 layers of dura: 1.Outer layer:periosteal covering that goes through the sutures and foramen. 2.Inner layer: covers the brain and spinal cord and forms the sinuses. |
| Falx cerebri | Inner layer of dura seperating the right and left hemispheres of the cerebrum. |
| Tentorium Cerebelli | Inner layer of dura seperating the cerebellum from the cerebrum. |
| Continuity of intracranial and intraspinal membranes: key attachments of inner dura layer | As the inner dura layer entends inferiorly, it has strong attachments at: 1.Foramen Magnum. 2.Posterior dens. 3.Posterior aspect of the body of C2 & C3. 4.Posterior aspect of the body of S2. |
| Cranial Rhythmic Impulse (CRI) | Palpation of cranial mobility. occurs at a rate of 10-14 per minute which is due to: 1.variation of ANS tone, 2.pulse pressure. **has good intraexaminer reliability. |
| Where is the origin of cranial motion? | Sphenobasiliar synchondrosis. **movement is on a scale of 5 |
| What occurs during CRI flexion | 1.SBS rises superiorly. 2.Occiput expands inferiorly and widens. 3.Greater wings of sphenoid move inferiorly and widen. **feels fatter and wider. BURT |
| What occurs during CRI extension | 1.SBS moves down inferiorly. 2.Occiput moves superiorly and gets thinner. 3.Greater wings of sphenoid move superiorly and get narrower. **feels thinner and longer. ERNIE |
| CRI rate | Measured from wide to wide. Fast: >14. Slow: <10 |
| CRI amplitude | Normal: 4-5. Low: <4 **0: sphenobasilar compression. |
| What could cause a CRI asymmetry? | 1.Cranial base strains. 2.Cranial bone restrictions. 3.Cranial membrane strains. |
| PRM component 5: Sacral motion is linked to cranial motion | The sacrum base rises during extension, and falls during flexion when patient is supine. **restriction at sacrum affects the cranium, therefore need to check sacrum with headaches. |
| Entrainment | CRI is a summation of different autonomic phenomenon. Waves upon waves. 1.Flexion: Ext rotation. 2.Extension: Int rotation. |
| 3 different CRI holds | 1.Vault hold (put the ear in between the V). 2.Fronto-occipital hold. 3.Posterior Temporal hold. |
| Asterion | Just above the mastoid process. meeting of parietal, occiput, temporal bone. |
| Inion | Promenence on the occiput |
| Pterion | 4 cranial bones intersect: 1.temporal, 2.Parietal, 3.Frontal, 4.Sphenoid. |
| Lambdoidal suture | b/w occiput and parietal |
| difference between CN VII Bell's palsy and stroke? | with bell's palsy, wont be able to raise paralyzed side eyebrow. |
| contraindications for cranial | 1.Intracranial bleed. 2.Skull or facial fractures. 3.Infections of the brain, dura meninges. 4.caution with seizures. 5.CNS cancer. |
Created by:
WeeG
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