Intro to OCF (4/1 - Kania) Flashcards
what are the three continuity units
Neural System continuity: CNS to ANS
Connective Tissue continuity: fascia, membranes, bones
Fluid System continuity: CSF, lymph
what are the components of our inherent immunity
Structural Integrity
-which begets functional efficiency
Healthful nutrition
Adequate rest, including sleep!
Inner serenity
who was the doc that observed the skull moving
William Garner Sutherland
where there is a bevel there is likely….
motion!
the cranial bones have bevels (especially the temporal bone)
its like a fish gill!
harder to move when you are interdigitated (not beveled)
what is the primary respiratory mechanism
primary –> underlying all other physiological functions
respiratory–> cellular respiration
mechanism –> cranial articulations
what are the 5 tenets of the primary respiratory mechanism (PRM)
The fluctuation of the CSF and the potency of the tide
The mobility of the intracranial and intraspinal membranes, and the function of the reciprocal tension membrane
The inherent motility of the central nervous system
The articular mobility of the cranial bones
The involuntary mobility of the sacrum between the ilia
***These 5 points are the structure-function relationship b/w the CNS and the cranium
what is tenet 1 of the PRM
where is majority of the CSF formed, how about the rest?
the intraventricular and subarachnoid spaces are connected via what foramen?
where is CSF drained
the fluctuation of the CSF and the potency of the tide:
Movement of the CSF involves circulation and fluctuation
70% of CSF is formed at the choroid plexi in the ventricles (and thought to be channeled through the arachnoid granulations)
30% of CSF is formed as CSF extracellular fluid moves into the subarachnoid space.
The intraventricular and subarachnoid spaces are connected by the foramen of Magendie and the foramen of Luschka
CSF is drained by the paravascular and extracellular spaces of the CNS
what is the cranial rhythmic impulse?
fluctuation of the CSF that has 2 characteristics:
1) physical potency/energy that acts throughout the body as a hydrodynamic mechanism
2) electrical potential acting in a positive and negative phases
both are intimately integrated with the reciprocating motility of the CNS
what is the rate at which cranial rhythmic impulses occur
10-14 cycles per minute in normal adults
what is tenet 2 PRM
The mobility of the intracranial and intraspinal membranes, and the function of the ***Reciprocal Tension Membrane (the dura)
dura is contiguous with periostium of calvarium (inside and out) and forms the falxes and tentorium
falx cerebri
tentorium cerebelli
falx cerebelli
what are the functions of the reciprocal tension membrane
partition
support
shock-absorbing
what is the sutherland fulcrum
the site where the three sickle-shaped agencies (flax cerebri, cerebelli and tentorium cerebeli) originate
(the common origin
it is a floating shifting point of balance
feels much like balancing a mobile on one finger
what are the attachments of the falx cerebri
Crista galli of the ethmoid Frontal bones along the metopic suture Parietal bones along the sagittal suture Occiput Tentorium cerebelli
what are the attachments of the tentorium cerebelli
Posterior clinoid processes of the sphenoid Petrous ridges Mastoid portion of the temporals Posteroinferior angles of the parietals Transverse ridges of the occiput
what are the attachments of the falx cerebelli
Tentorium cerebelli
Occiput to foramen magnum
what is the inhalation phase of PRM that occurs in tenet 2?
flexion of SBS (sphenobasilar symphysis)
external rotation of paired bones
in the inhalation phase ... what happens to the falx cerebri ? crista galli? tentorium cerebelli? venous sinuses change into what shape? do the venous sinuses contain muscles?
midline bones?
paired bones?
what happens to the sacral base?
Falx cerebri shifts anteriorly in the arc of its sickle
Crista galli moves posteriorly
Tentorium cerebelli shifts anteriorly and flattens, but is not relaxed
Venous sinuses change in shape from “V” to ovoid with increased capacity for drainage of blood. They do not contain muscle within the walls to enhance the return of blood into circulation
Midline bones move into flexion
Paired bones move into external rotation
Cephalad pull on spinal dura causes sacral base to move posterosuperiorly while the apex moves toward the pubic symphysis (extension)
sphenoid tips forward
what is the exhalation phase of the PRM
extension of the SBS
internal rotation of paired bones
in the exhalation phase of PRM what happens to the .... falx cerebri? crista galli? tentorium cerebelli venous sinuses (shape change) ? midline bones paired bones sacral base?
Falx cerebri shifts posteriorly in the arc of its sickle
Crista galli moves anteriorly
Tentorium cerebelli shifts posteriorly and rises
Venous sinuses change in shape from ovoid to “V” with decreased capacity for drainage of blood.
Midline bones move into extension
Paired bones move into internal rotation
Caudad pull on spinal dura causes sacral base to move anteroinferiorly while the apex moves away from the pubic symphysis (flexion)