exam 2 thoracics Flashcards
Features that allow discrimination between T2-4 and T5-8 segmental groups?
Vertebral body, transverse process, articular process and spinous process
Outline of the vertebral body of typical thoracic from superior view?
Triangular
Cranial view outline of vertebral body T2-4 group
Vertebral body convex sides bilaterally
Name given to left side apperance vertebral body T5-8?
Aortic impression
Part of vertebral body most influences by aorta at T5-8?
Left side sup. and inf. epiphyseal rims
Height pattern of typical thoracic vertebral body?
Post. height greater than ant. height by 1-2 millimeters
principal cause of posterior curve of thoracic spine?
Vertebral body height differences
Anterior-posterior curves of vertebra column, direction of thoracic spine faces ___?
Post.
Another name for posterior curve pattern
Kyphotic curve
Joint Classifications at vertebral body of typical thoracic?
Fibrous (amphiarthrosis) syndesmosis, Cartilaginous (amphiarthrosis) symphysis, and synovial plane (diarthrosis arthrodia)
Number of synovial joints formed at vertebral body of typical thoracic? symphysis joints?
4, 2
How many joints formed at vertebral body of typical thoracic
Typically 10 (14 if costoentral stellate/radiate ligs. included)
Name given to joint formed between vertebral body and rib?
Costocentral joint
Which demi-facet on vertebral body of typical thoracic is larger?
Sup costal demi-facet
Ligaments supporting costocentral joint
Costocentral stellate/radiate lig and costocentral interarticular or intra-articular lig.
Costocentral intra-articular/interarticular lig. connects to…
Interarticular/intra-articular crest of the head of riib and IVD
Size relationship between articulating surface of head of rib and costal demi-facet surface
Rib surface is greater than costal demi-facet surface
Muscle(s) attaching to vertebral body T2 or T3?
Longus colli
Position and direction of pedicle from typical thoracic vertebral body
Pedicle arises form upper 1/3 if vertebral body and projects post. and slightly lat.
Angulation of pedicle in typical thoracic region
10-15 degrees posterolateral from sagittal plane
Which xray used to see intervertebral foramen of typical thoracics
Lat. view
Vertebral notch/incisure that is said to be prominant?
Inf. vertebral notch/incisure
Overlap of the lamina is called ___ in typical thoracic?
Shingling
Outline of vertebral foramen in typical thoracic region
Oval to circular
Plane where size of vertebral foramen greatest in typical thoracic
Transverse plane, the vertebral transverse diameter
What is present on the transverse tubercle of typical thoracic?
Transverse costal facet
Osseous parts of costotransverse joint
Transverse costal facet and articular surface of tubercle of rib
Ligaments supporting costrotransverse joint of typical thoracic
Sup. costotransverse, inf. costotransverse, & lat. costotransverse ligs.
Muscles that may attach to transverse process of typical thoracic
Longissimus thoracis, cervicis, & capitis; semispinalis thoracis, cervicis, & capitis; multifidus, rotator longus, rotator brevis, intertransversarii, levator costarum longus and brevis
How to distinguish between T2-4 from T5-8 segment using articular process
T2-4: width between sup. articular facets is greater than width between inf. facets of that vertebra
T5-8: width between sup. facets equal to/same as width between inf. facets of that vertebra