Atypical Thoracic: T1 Flashcards
What joint classifications are identified at the vertebral body of T1?
fibrous (amphiarthorsis) syndesmosis, cartilaginous (amphiarthrosis) symphasis and synocial plane (diarthrosis arthrodia joint)
the modified synovial saddle (diarthrosis sellar is only observed as an anatomical variation
How many joints are formed at the vertebral body of T1?
typically ten (fourteen if the rib ligaments are included)
Which muscle(s) is attached to the vertebral body of T1?
the longus colli
Which spinal nerve - vertebral notch or incisure 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?
longissimus thoracis, longissimus cervicis. longissimus capitis
semispinalis cervicis, semispinalis 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 joints are present at T1?
ten
What is the angulation of the spinous process of T1?
the undersurface of the T1 spinous processes will be nearly horizontal from the horizontal plane
What is the gender bias associated with the T1 as the vertebral prominence?
males (9%) are more likely than females (6%) to demonstrate T1 as the vertebral prominence
What muscles attached to the spinous process of T1?
the trapezius, rhomboid minor, serratus posterior superior, splenius capitis, spinalis thoracis, 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)
