cervical 1 Flashcards
the CS has more muscles & is most mobile region of the VB, so its job is to maintain ____ while still allowing for a great deal of ___
head posture
mobility
cervical curve is considered ___ distinct of the spinal curve, and is considered a ___ curve
least
secondary (compensatory)
- three bones making up the UCS, the most complex region of the spine, and their articulations
- are anatomically and kinematically unique, lack IVD at both
occiput-atlas-axis
atalnto-occipital
atlanto-axial
combined theta X
one sided theta Z
one sized theta Y
movements are all found at which joints
atlanto-occipital
atlanto-axial
transverse lig of the atlas alar ligs PLL post atlanto-occ memb ant atlanto-occ memb ligamentum nuchae apical lig -are all:
stabilizing ligaments (UC)
the superior atricular process on the lateral masses of atlas are ___ and face slightly ___
concave
medial
the anat struct at C0/C1 is ____ on both planes, with the LM of C1 like a peanut, allowing for little ____
cuplike
rotation
motion of occiput-atlas (occip glide) is ____ on the ___ axis
rotation (PS/AS)
theta X
with X AXIS rot of occ-C1, ___ is limited by post neck musc tension and ___ is limited by subocc musc compression against the occiput
flexion
extension
Y AXIS rot of occ-C1 has a range of - degrees to EACH SIDE, but axial rotation is limited by __ __ tension
4-8
alar ligament
Y AXIS rot of occ-C1 has a range of - degrees to EACH SIDE, but axial rotation is limited by __ __ tension
4-8
alar ligament
Z AXIS rot of occ-C1 is not possible under _____ conditions, but can be induced so one condyle elevates out of its socket while other pivots in ____
physiological
cadavers
- Z AXIS rot of occ-C1 is limited by __ lig attachments, but some does occur w/ some coupled ____ in the opposite direction
- rot of chin AWAY from lat flex side
alar
rotation
C1 INF articular process is flat or slightly concave, faces slightly ___, and has a ___ articulation with C2 bc of cartilage config
medial
biconvex
X AXIS rot C1/C2 biconvexity combined theta X = ___ degrees
-greater curve in dens = greater theta x
20
- there is a LOT of Y AXIS rot C1/C2, ___ degrees +/- 5.5, but alar lig can restrain
- accounts for __% of neck rot
43
50
with Y AXIS rot of C1/C2, the bigger lat mass indicates rotational ____ on that side
anteriority
- tissues that fill the spaces bt cartilages ant & post that serve to keep a film of synovial fluid applied to those surfaces of the articular cartilages that don’t contact e/o
- displaced w/ Y AXIS rot, return passively
intra-articular meniscoids
theta Y movement in C1/C2 is coupled with ____
y translation
in C1/C2 there is little _ axis translation, and _ axis translation is controversial, according to panjabi and white it is only “apparent”
Z
X
in C1/C2 there is little _ axis translation, and _ axis translation is controversial, according to panjabi and white it is only “apparent”
Z
X
- as the head is lat flex to one side, the ___ artic proc takes on a greater load, while the C@ inf artic surface slopes ____
- rotation of SP of C2 TOWARD the convexity of lat bend
ipsilateral
inferiorly
- as the head is lat flex to one side, the ___ artic proc takes on a greater load, while the C@ inf artic surface slopes ____
- rotation of SP of C2 TOWARD the convexity of lat bend
ipsilateral
inferiorly
in lateral bending coupled with axial rotation, the ___ moves to the ___ side
spinous
contralateral
