Atyical Thoracic: T1 Flashcards
What joint classifications are IDed at the vertebral body of T1?
Fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis ans synovial saddle plane (diarthrosis arthrodia joint)
The modified synovial saddle (diarthrosis sellar) is only observed as an anatomical variation
How many synovial joints are formed at the vertebral body of T1?
Four normally
How many symphysis joints are formed with the vertebral body of T1?
Two
How many syndesmosis joints are formed at the vertebral body of T1?
Typically four are IDed (as many as eight if the rib articulation is included)
How many joints are formed at eh vertebral Boyd 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 combo 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 and brevis, intertransversarii, levator costarum brevis
What is the orientation of the superior articular facet of T1?
The 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 process will be nearly horizontal from the horizontal plane
What name is used to ID the topographical landmark at the base o the neck>
Vertebral prominence
Which vertebrae have been IDed as forming the vertebral prominece?
C6, C7, T1
What is the gender bias associated with T1 as the vertebral prominence?
Males (9%), Females (6%)
What muscles attach to the spinous process fo T1?
The traps, rhomboid major, Serratus posterior superior, spinalis thoracis, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidis, rotators and interspinalis
Which muscles attaching to the spinous process of T1 are not included in any muscle layer of the true back?
Splenius capitis and interspinalis
What joint classifications are present at the T1 vertebra?
Fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis, and synovial plane (diarthrosis arthrodia)
