Cranial Flashcards
spinal cord changes during respiration
lengthens and thins in exhalation shortens and thickens on inhalation
Motion of CRI in Inhalation
corresponds to flexion at the sphenobasilar synchondrosis (SBS)
The joint/connection posterior to the sella turcica between the sphenoid and the occiput
sphenobasilar synchondrosis (SBS)
Cycles of Cranial Rhythmic Impulse
10-14 cycles per minute
Describe Brain motion systole and Diastole. Describe the displacement of the midbrain and brainstem in reference to the foramen magnum and thalami.
Brain motion consists of a single displacement in systole followed by a slow return in diastole. This displacement includes a descent of midbrain and brainstem TOMWARDS foramen magnum with velocities ≤ 2 mm/sec Medial compression of thalami on 3rd ventricle 1.5 ≤ mm/sec.
how does systole and diastole behave according to the Traube-Hering-Mayer waves phenomenon. Do they relate to the cardiac or pulmonary respiratory cycles?
Description: Rhythmical variations in blood pressure (Systolic and diastolic values increase and decrease inversely to each other, frequency varying from 8 to 12 cycles a minute, related to variations in vasomotor tone, no
Which Sinus is the axis about which membranes move.
Straight sinus is the
factors that decrease rate of CRI
stress depression chronic fatigue chronic infections
factors that increase rate of CRI
vigorous physical exercise systemic fever following OMT to craniosacral mech
where does dura mater attach
foramen magnum, C2 C3 S2 (respiratory axis)
flexion SBS What do midline bones do vs paired bones?
midline bones of cranium and dura move cephalad (flexion): paired bones cranium externally rotate causes sacrum to counternutate (extend)
Sutherland named this functional anatomic unit, the Reciprocal Tension Membrane (RTM).
Meninges (review path of flow)
Absorption of the CSF into the blood stream takes place in the
superior sagittal sinus through structures called arachnoid villi .
What prevents the CSF from flowing into the blood stream? When will CSF will flow into the blood stream.
arachnoid villi act as “one way valves In the case were CSF pressure is greater than the venous pressure the arachnoid villi will NOT let blood pass into the ventricular system.
What foreman does CSF flows from the lateral ventricle to the third ventricle?
interventricular foramen (also called the foramina of Monro).
Aqueduct of Sylvius (cerebral aqueduct )
Connects the third and fourth ventricle to each other by the CSF then flows into the subarachnoid space through the
foramina of Luschka and the foramen of Magendie.
Lateral and and medial foramen that recieve CSF from 4th ventricle.
main function of Sharpey’s fibers in the skull
bind the cranial bones in a firm but moveable manner; they are most numerous in areas where the bones are subjected to the greatest forces of separation
Attatchement of Spinal Dura
extends through the Vertebral Canal into the Sacral Canal. It attaches to the posterior aspect of S-2.
The inferior attachment of the dural tube
is to the posterior aspect of the body of S2
How is the sacrum is suspended between the ilia
by anterior, posterior, and intra-articular ligaments
Axis in Torsion
AP
How are torsions names?
The most superior greater wind of Sphenoid Ex: Right Torsion–> GWS is higher on right
How does Sphenoid and Occiput rotate in in a torsion?
Sph–> clockwise Occ–> counter Clockwise
Axis for Side bending and rotation
Rotation–> AP axis through SBS SB–> 2 parallel through Foramen Magnum and other thorugh sphenoid
How does Sphenoid and Occiput move in side bending and rotation.
Together: either Clockwise or CC
How does Sphenoid and Occiput move in left sidebending?
they will be inferior on the left
Lateral strain axis
2 parallel vertical axis: one through sphenoid other through foramen magnum
How does Sphenoid and Occiput move in lateral strain patterns
Sphenoid is lateral to occiput
How are lateral strain patterns named?
Position of the basisphenoid
What occurs in a compression strain pattern?
When sphenoid and occiput are pushed together as a result of trauma
In a vault hold, where is your index finger
greater wing of sphenoid
In a vault hold, where is your middle finger
Temporal bone in front of the ear
In a vault hold, where is your ring finger
mastoid region of temporal bone
In a vault hold, where is your littlt finger
squamous portion of occiput
