7.3 thoracic region
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卡片预览 (19 张)
how many facet joints are in the thoracic region?
24
how many degrees in thoracic facets to transverse plane?
60 degrees
how many degrees in thoracic facets to frontal plane?
20 degrees
what are the costocorporeal joints?
connects the head of the rib with a pair of costal demi facets with the adjacent inner vertebral discs
what are the costotransverse joints?
joint between transverse process and the rib - connects articular tubercle of most ribs to the costal faced on the transverse process of corresponding thoracic vertebrae
what does the costotransverse ligament do?
anchors neck of rib to entire length of transverse process
what are the 3 planes of movement of thoracic region?
-sagittal flexion, extension - axial rotation - lateral flexion
what are the arthokinematics of thoracic flexion?
articular facets of superior vertebrae glide superiorly and anteriorly on the inferior vertebrae
what are the arthrokinematics of the thoracic spine in extension?
inferior facets of superior thoracic vertebrae glide inferiorly and posteriorly on the superior facets of the inferior vertebrae
In extension the Anterior longitudinal ligament is…?
stretched
what limits thoracic extension?
vertebral arch - spinous process and laminae
why is rotation greater in upper segments and less in lower segments?
the facet alignment shifts from frontal plane orientation in upper thoracic to a more sagittal plane orientation in lower segments
what are the arthrokinematics of RIGHT rotation in thoracic spine?
inferior and posterior glide on the right and a superior and anterior glide on the left. closing on the right and opening on the left
what are the arthrokinematics of RIGHT lateral side bending of the thoracic spine?
right inferior facet of the superior vertebrae glides inferiorly and the left glides superiorly
where is there greater motion during ventilation?
elevation and depression of the shaft of the rib
as we take air in we see a increase in what diameters…?
the vertical diameter, medio-lateral diameters and anterior posterior diameter
during inspiration the ribs elevates about an axis of rotation that is parallel to the transverse process, what is also created?
torsion in the twisted cartilage of the sternocostal joint
what accompanies rib movement in forced inspiration?
slight thoracic extension
what happens to ribs and sternum during expiration?
return to their pre-inspiration position