VI: Thoracic and Dorsal Region: Atypical Thoracics: T1 and T9 Flashcards
What joint classifications are identified at the vertebral body of T1?
fibrous (ampiarthrosis) syndesmosis, cartilaginous (ampiarthrosis) symphysis and synovial plane (diarthrosis arthrodia joint)
the modified synovial saddle (diarthrosis sellar) is only observed as an anatomical variation
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 ligaments
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?
BUL
What is the orientation of the inferior articular facet of T1?
ForMeD
What name is used to identify the topographical landmark at the base of the neck?
vertebral prominence
Which vertebrae have been identified as forming the vertebral prominence?
C6, C7, T1
What is the gender bias associated with T1 as the vertebral prominence?
males (9%) are more likely than females (6%) 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, spinalis thoracis, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, interspinalis
What ligaments attach to the transverse process of T9?
intertransverse, capsular costotransverse, superior costotransverse, inferior costotransverse and lateral costotransverse ligaments
The superior costotransverse ligament of T9 will attach to which rib?
the tenth rib
Which muscles attach to the transverse process of T9?
the longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, intertransversarii, levator costarum longus and levator costarum brevis
