Day 24 (Atypical Thoracic: T12; muscle attachment to the thoracic spine) Flashcards
How many synovial joints are formed at the vertebral body of T12?
two
How many symphysis joints are formed with the vertebral body of T12?
two
How many joints are typically formed at the vertebral body of T12?
typically eight (ten if the costocentral stellate/radiate ligaments are included)
Which muscle(s) is attached to the vertebral body of T12?
psoas major and psoas minor
What does the lateral tubercle of T12 represent?
the transverse process
What does the superior tubercle of T12 represent?
the mammillary process of the lumbar vertebrae
What does the inferior tubercle of T12 represent?
the accessory process of lumbar vertebrae
Which is the smallest of the tubercles at the transverse process region of T12?
the inferior tubercle
What joint surface of the typical thoracic transverse process is absent on T12?
the transverse costal facet
What ligaments from the costotransverse joint of the twelfth rib?
the superior costotransverse ligament from T11 and the lumbocostal ligament from L1
Which costotransverse ligament(s) are attached at T12?
none; the capsular, superior, inferior, and lateral costotransverse ligaments lack an attachment to T12
What muscles attach to the transverse process region of T12?
the longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis and intertransversarii
Which segment is the last to demonstrate a levator costarum brevis attachment?
T11
Which segment is the last to demonstrate a levator costarum longus attachment?
T10
What is the orientation of the superior articular facets of T12?
they face backward, upward, and lateral (BUL)
