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flexion correct answers in the lumbar spine, this is an anterior roll and anterior glide of the superior vertebrae, which tensions the interspinous ligament, supraspinous ligament, facet capsules and posterior disc. Compresses the anterior disc. frontal plane correct answers the inferior facet of the 5th lumbar vertebrae is oriented in this plane to prevent shear of it on the sacrum extension correct answers in the lumbar spine, posterior roll and posterior glide, tensions the ALL and the anterior disc, compression at the facet joint ipsilateral correct answers with rotation in the lumbar spine, the _____ side facets will gap 1 correct answers which fryette law says when the lumbar spine is neutral, sidebending of a vertebral segment will be opposite the direction of rotation 2 correct answers which fryette law says when the lumbar spine is flexed or extended, sidebending of a vertebral segment will be in the same direction of rotation ribs correct answers what is the main limitation to lateral bending in the thoracic spine flexion correct answers during this movement at the cervical spine, the occiput will roll anteriorly and slide posteriorly on the atlas. flexion correct answers in the cervical spine this will increase the diameter of the intervertebral foramen extension correct answers in the cervical spine this will decrease the space in the intervertebral foramen same correct answers in the cervical spine, rotation and sidebending occur in the ______ direction instability correct answers the definition of this is a decrease in youngs modulus, (stiffness), decrease in yield point, decrease in ultimate strength, decrease in load to rupture. short segmentals correct answers deepest layer of back muscles, interspinales and intertransversarii, they are small cross sections, rich in muscle spindles, most likely act as muscle transducers, react to small displacements transversospinales correct answers intermediate layer of back muscles, semispinales thoracis, multifidi and rotatores, back extensors, position transducers and vertical stabilizers erector spinae correct answers most superficial layer of back muscles, back extensors, iliocostalis lumborum, longissimus thoracis, and spinalis thoracis