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THE SPINE

alignment of the body parts whether upright, sitting, or recumbent POSTURE
How many vertebrae does the spinal column have? 33 (7 cervical, 12 thoracic, 5 lumbar, 5 fused sacral, and 3 or 4 coccygeal)
this is a functional component of the spine that is madeup of vertebral bodies and intervertebral discs, and is the hydraulic, weightbearing, shock-absorbing portion of the spinal column ANTERIOR PILLAR
this is the functional component of the spine that is made up of articular processes and facet joints, which provide the gliding mechanism for movt POSTERIOR PILLAR/VERTEBRAL ARCH
these are the bony levers of the spine which is part of the posterior unit 2 transverse processes spinous processes (1) 2 transverse processes (2) spinous processes (to w/c the mm are attached to)
the functional unit of the spine is composed of ____________ and ___________ 2 vertebrae joints in between 2 vertebrae joints in between (2 zygopophyseal facet joints and 1 IV disc)
Where is the axis of motion in each unit of the spine? NUCLEUS PULPOSUS NUCLEUS PULPOSUS of the IV disc
with flexion of the spine, the ant portion of the bodies (approximate, separate) and the spinous processes (approximate, separate) approximate, separate
with extension of the spine, the ant portion of the bodies (approximate, separate) and the spinous processes (approximate, separate) separate, approximate
with side bending, the lateral edges of the vertebral bodies (approximate, separate) on the side towards which the side of the spine is bending and (approximate, separate)on the opposite side approximate, separate
rotation to the right results in relative movt of the body of the superior vertebrae to the (left, right) and its spinous process to the (left, right) right, left
the superior facets of the lumbar spine are (flat, convex, concave) concave
the inferior facets of the lumbar spine are (flat, convex, concave) convex
it is the consistent association of one motion about an axis with another motion around a different axis COUPLED MOTION
what are the components of the suboccipital region of the cervial spine? occiput, atlas, and superior facets of the axis
it is a ball and sockt joint OCCIPITAL-ATLANTAL JOINT occiput-convex >> atlas-concave primary motions- fwd and bwd bending
primary movt of the atlantoaxial jt rotation rotation is coupled with fwd and bwd movt of the articulating surfaces (side bending) -rot to the R >> fwd movt of the L arti surfaces and bwd movt of R arti surf of C1 on C2 - rot to the R, side bend to the R (v.v)
angle of facet jts in a tyical cervical spine 45 deg typical cervical region-inf facets of the axis and the rest of th cervical spine;rot and side bending
these are boney projections of the cervical spine that provide lateral stability to the spine and reinforcce vertebral discs posterolaterally JOINTS OF LUSCHKA
coupling of rotation and side bending motions at the upper portion of the thoracic spine are in the (same, opposite) direction same
coupling of rotation and side bending motions at the lower portion of the thoracic spine are in the (same, opposite) direction opposite
coupling with lat flexion at the lumbar spine, rotation occurs to the (same, opposite) direction same
coupling with rotation at the lumbar spine, lat flexion occurs to the (same, opposite) direction opposite
what are the components of the intervertebral discs? ANNULUS FIBROSUS, NUCLEUS PULPOSUS -annulus fibrosus provides tensile strength -nucleus pulposus distribute pressure evenly throughout the disc; imbides water when pressure is reduced and squeezes water out under compressive loads (maintains tiss health and transport of nutrients)
the outer portion of the annulus fibrosus is made up of _______ and ________ COLLAGEN FIBERS, FIBROCARTILAGE
what are the ligamentous support of the annulus fibrosus? ANTERIOR LONGITUDINAL LIGAMENT POSTERIOR LONGITUDINAL LIGAMENT
the nucleus pulposus is generally located at the center except in (cervical, thoracic, lumbar, sacral, coccyx) spine LUMBAR it is situated closer to the posterior border of the annulus fibrosus
which component of the nucleus pulposus has great affinity for water? PROTEOGLYCANS high concentrations of proteoglycans, healthier spine
dunring fwd bending of a vertebral segment, the ant part of the disc is (compressed, distracted) compressed
dunring fwd bending of a vertebral segment, the post part of the disc is (compressed, distracted) distracted
this covers the nucleus pulposus suply and infly and lie b/n the nucleus pulposus and vertebral body, and is encircled by the apophyseal ring of the respoective vertebral body
Created by: mayshironnah