Thoracic or Dorsal Region Flashcards
which thoracic segments are considered the typical thoracics?
t2-t8 segments
which thoracic segments are considered the atypical thoracics?
t1,t9-t12
what features will allow discrimination between t2-t4 and t5-t8 segmental groups?
the vertebral body, transverse process, articular process, and spinous process
what is the outline of the vertebral body of a typical thoracic from a superior view?
traingular
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 is the height pattern of the typical thoracic vertebral body?
the posterior height is greater than the anterior height by one to two millimeters
what is the principle cause of the posterior curve of the typical thoracic spine?
the vertebral body height differences
in terms of the anterior-posterior curves of the vertebral column, what direction will the thoracic spine face?
posterior
what is another way of naming a posterior curve pattern?
a kyphotic curve
what joint classifications are identified at the vertebral body of the typical thoracic?
fibrous (amphiarthrosis) syndesmosis, cartilaginous (ampiarthrosis) sympysis, and synovial plane (diarthrosis arthrodial)
how many synovial joints are formed at the body of a typical thoracic?
four
how many symphysis joints are formed with the vertebral body of a typical thoracic?
two
how many joints are formed at the vertebral body of a typical thoracic?
typically ten (fourteen if the costocentral stellate/radiate ligaments are included?
which of the demi-facets on the vertebral body of a typical thoracic is larger?
the superior costal demi-facet
what feature will provide assistance in maintaining the stability of the intervertebral foramen in the typical thoracics?
the costocentral joint or ribs
what is the rib-vertebral body combination at the intervertebral foramen for the ____ nerve? lets us the t6 nerve
theINFERIOR costal demi-facet of t6 will joint with the SUPERIOR articular surface of the head of the seventh rib
the SUPERIOR costal demi-facet of t7 will joint with the INFERIOR articular surface of the head of the seventh rib