Cranial Mechanics Flashcards
The main articulation of the skull is the ________ in which the sphenoid and occiput exhibit flexion and extension and rotate about ________ axes.
Sphenobasilar synchondrosis, transverse
External rotation occurs during ________ of the skull, and internal rotation occurs during ________.
Flexion, extension
The unpaired bones move in ________ and ________ and move within the ________ plane.
Flexion, extension, sagittal
Similar to lateral strains, vertical strains are named for the direction that the ________ moves. However, the sphenoid and occiput rotate about two ________ axes in the same direction.
Basisphenoid, parallel transverse
The diaphragm manipulated utilizing the craniosacral mechanism is the ________.
Tentorium cerebelli
The cranial rhythmic impulse cycles about ________ times per minute.
8-10
In ________, there is no motion at the SBS due to the sphenoid and occiput being pushed together.
Compression
In a superior vertical strain, the head will ________. This corresponds to a ________ sphenoid.
Look down, flexed
The straight sinus is located at the junction of the ________ and the ________. This is the location of the ________.
Falx cerebri, tentorium cerebelli, reciprocal tension membrane
The principle aim of treatment is to establish ________.
Free and uninhibited physiologic motion
Side-bending rotations occur when the sphenoid and occiput move ________ each other on one side. They are named for the ________ side.
Toward, convex (the convex side is the side that is opposite of where the sphenoid and occiput move closer together)
The cranial vault is formed by the frontal bone, parietal bones, and the squamous portions of the occipital and temporal bones. They all arise from ________ type bone.
Membranous
Lateral strains occur about two ________ axes of rotation. They are named for the direction that the ________ moves.
Parallel vertical, basisphenoid
During flexion of the SBS, the sphenoid rotates ________ while the occiput rotates ________. The basisphenoid and basiocciput both ________ during flexion.
Anteriorly, posteriorly, elevate
Looking at someone’s skull from behind (posterior view), a right torsion would result in the sphenoid rotating ________ and the occiput rotating ________.
Counterclockwise, clockwise
The paired bones move in ________ and ________.
External rotation, internal rotation
In lateral strains, both the sphenoid and occiput rotate about their vertical axes in the ________ direction.
Same
Torsions refer to twisting at the ________ about an ________ axis. They are named based on which greater wing of the sphenoid is ________.
SBS, anterior-posterior, superior
The four unpaired midline bones are the ________, ________, ________, and ________.
Occiput, sphenoid, ethmoid, vomer
Craniosacral extension causes the sacrum to undergo motion called ________.
Nutation (flexion)
Contraindications to cranial treatment include ________, ________, ________, ________, ________, and ________.
Intracranial hemorrhage, unstable intracranial pressure, age (≤ 6), trauma, seizure, malignancy
Five components contribute to palpable “cranial rhythmic impulse” (CRI). They are:
1) ________
2) ________
3) ________
4) ________
5) ________
1) inherent mobility of the brain and spinal cord
2) fluctuation of the CSF
3) motility of intracranial and intraspinal meninges
4) Articular mobility of the cranial bones
5) Involuntary mobility of the sacrum between the ilia
Simplified:
1) the brain and spinal cord can move
2) the CSF flow can differ
3) the meninges can move
4) the cranial bones can move
5) the sacrum can move
Craniosacral flexion causes the sacrum to undergo motion called ________.
Counternutation (extension)
The cranial base is formed by the sphenoid, the patrons and mastoid parts of the temporal bones, and the basilar and condylar parts of the occipital bone. They all arise from ________ type bone.
Cartilaginous
