Anatomy - Thorax and Ribs Flashcards
Vertebral body shape of a thoracic vertebrae
Heart shaped
Vertebral foramen of a thoracic vertebrae
Relatively small
Spinous processes of thoracic vertebrae
Narrow, tapered and shingled.
Transverse processes of thoracic vertebrae
Project laterally and posterior.
Plane of apophyseal facets of thoracic vertebrae
In the frontal plane.
Superior apophyseal facets in thoracic vertebrae
Face posterior
Inferior apophyseal facets of thoracic vertebrae
Face anterior
Unique feature of thoracic vertebrae
Costal articulations
Ligaments of the thoracic spine
Anterior and posterior longitudinal ligaments, ligamentum flava, intertransverse, interspinous and supraspinous ligaments.
Supraspinous ligament
Distal continuation of the ligamentum nuchae. Attache to the most posterior aspect of SPs from C7 to the sacrum. Taut during flexion and rotation.
Ribs
Long, flat bones with a head, neck and shaft portion.
True ribs
Have a direct attachment to the sternum via a costal cartilage. Includes ribs 1-7.
False ribs
Ribs which have an indirect attachment to the sternum via a costal cartilage. Includes ribs 8-10.
Floating ribs
Ribs which have no anterior attachment. Includes ribs 11 and 12.
Costovertebral articulations
The rib head articulates with the facet or demi-facet of the vertebral body.
Classification of the costovertebral articulations
Synovial, gliding
Facets of the thoracic vertebrae
Full, circular articulating surface for a rib head.
Which thoracic vertebrae have full articular facets?
The superior portion of T1, T11 and 12.
Thoracic demi-facet
Half-circle articulating surface which is couple with the adjacent vertebae.
Thoracic vertebrae with demi-facets
The inferior portion of T1, both portions of T2-T9.
Costotransverse articulations
Articulation between the neck of the rib and the transverse processes.
Classification of the costotransverse articulations
Synovial, but amphiarthrotic due to the joint capsule.
Intercostal groove
Groove found on the inferior, interior aspect of each rib. Houses the intercostal nerve, artery and vein.
The head of rib 3 articulates with which vertebrae?
Those above and below; T2 and T3.