III. Vertebral Column: Thoracic REgion: T2-T8 Flashcards
What features will allow discrimination between T2-T4 and T5-T8 segmental groups?
the vertebral body, transverse process, articular process and spinous process
On cranial view, what is the outline of the vertebral body for the T2-T4 group?
the vertebral body will have bilaterally convex sides
On cranial view, what is the outline of the vertebral body for the T5-T8 group?
the left side of the vertebral body will be flattened, the right side convex
What is the name given to the left side appearance of the vertebral body of T5-T8?
the aortic impression
What part of the vertebral body is most influenced by the aorta at T5-T8?
the left side superior and inferior epiphyseal rims
What synovial joint surfaces are present on the vertebral body of a typical thoracic?
the right and left superior and the right and left inferior costal demi-facets
Which of the demi-facets on the vertebral body of a typical thoracic vertebral body is larger?
the superior costal demi-facet
What is the appearance and position of the lamina in a typical thoracic?
the lamina is short, broad and thick and lies next to the spinous process
What is the direction of the transverse process in the typical thoracics?
the transverse process projects more posterior with each inferior vertebra
How do the transverse diameters of the articular processes compare in the T2-T4 region?
the superior articular process transverse diameter is greater than the inferior articular process transverse diameter for a given segment
How do the transverse diameters of the articular processes compare in the T5-T8 region?
the superior articular process transverse diameter is the same as or equal to the inferior articular process transverse diameter for a given segment
What is the pars interarticularis?
the region between the superior and inferior articular processes
What part of a vertebra arises laterally from the pars interarticularis?
the transverse process
What is the angulation of the spinous process of T2-T4?
the undersurface of T2-T4 spinous processes will angle up to forty degrees from the horizontal plane
What is the angulation fo the spinous process of T5-T8?
the undersurface of T5-T8 spinous processes will angle up to sixty degrees from the horizontal plane
