IV. Basic Osteology of the Vertebral Column, Sternum and Ribs: Vertebral Column: B) Thoracic Region: T2-T8. (Pg. 31) Flashcards
What features will allow discrimination between T2-T4 and T5-T8 segmental groups?
the vertebral body, transverse process, articular process and spinous proces
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 of the T5-T8 group?
the left side of the vertebral body will be flattened, the righ 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
What is the distance between the transverse tubercles in the typical thoracic region?
from T2 each transverse diameter becomes shorter as the transverse process angle more posterior
What I s present on the transverse tubercle of a typical thoracic?
the transverse costal facet
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 name is given to the region between the superior and inferior articular processes in the typical thoracics?
the pars interarticularis
What part of a vertebra arises laterally from the pars interarticularis?
the transverse process
What part of a vertebra arises medially from the pars interarticularis?
the lamina
What is the orientation of the spinous process of a typical thoracic?
they slant backward and downward
Which vertebrae will have a spinous process angulation of up to forty degrees?
T2-T4
