Atypical Thoracic T1 Flashcards
What joint classifications are identified at the vertebral body of T1?
fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis, and synovial plane (diarthrosis arthrodia) the modified saddle (diarthrosis seller) is only observed as an anatomical variation
How many joints are formed at the vertebral body of T1?
typically 10 (fourteen if the rib ligaments are included)
Which muscle(s) is attached to the vertebral body of T1?
the longus colli muscle
Which spinal nerve - vertebral notch or incisor combination is present at T1?
C8 spinal nerve - the superior vertebral notch or incisure of T1
T1 spinal nerve - the inferior vertebral notch or incisure of T1
What ligaments support the costotransverse joint of T1?
the inferior costotransverse and lateral costotransverse ligaments
What ligament is absent at the costotransverse joint of T1
the superior costotransverse ligament
What muscles attach to the transverse process of T1?
lonissimus thoracic, lingissimus cervice, longissimus capitis, semispinalis cervicis, semispinlais capitis, multifidis, rotator longus, rotator brevis, intertransversarii, levator costarum brevis
What is the orientation of the superior articular facet of T1?
they face backward, upward, and lateral (BUL)
What is the orientation of the inferior articular facet of T1?
they face forward, downward and medial (ForMeD)
How many synovial joint are present at T1?
10
What is the angulation of the spinous process of T1?
the undersurface of the T1 processes will be nearly horizontal from the horizontal plane
What is the gender bias associated with T1 as the vertebral prominence?
males (9%) are more likely that females (8%) to demonstrate T1 as the vertebral prominence
What muscles attach to the spinous process of T1?
the trapezius, rhomboid minor, serratus posterior superior, splenius capitis, pintails thoracic, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidis, rotator longus , rotator brevis, interspinalis
What joint classifications are present at the T1 vertebra?
fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis ) symphysis and synovial plane (diarthrosis arthrodia)
