Atyical Thoracic: T1

Question 1

What joint classifications are IDed at the vertebral body of T1?

Answer 1

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

Question 2

How many synovial joints are formed at the vertebral body of T1?

Answer 2

Four normally

Question 3

How many symphysis joints are formed with the vertebral body of T1?

Answer 3

Two

Question 4

How many syndesmosis joints are formed at the vertebral body of T1?

Answer 4

Typically four are IDed (as many as eight if the rib articulation is included)

Question 5

How many joints are formed at eh vertebral Boyd of T1?

Answer 5

Typically ten (fourteen if the rib ligaments are included)

Question 6

Which muscle(s) is attached to the vertebral body of T1?

Answer 6

The Longus colli

Question 7

Which spinal nerve - vertebral notch or incisure combo is present at T1?

Answer 7

C8 spinal nerve - the superior vertebral notch or incisure of T1
T1 spinal nerve - the inferior vertebral notch or incisure of T1

Question 8

What ligaments support the costotransverse joint of T1?

Answer 8

The inferior costotransverse and lateral costotransverse ligaments

Question 9

What ligament is absent at the costotransverse joint of T1?

Answer 9

The superior costotransverse ligament

Question 10

What muscles attach to the transverse process of T1?

Answer 10

Longissimus thoracis, longissimus cervicis, longissimus capitis, semispinalis cervicis, semispinalis capitis, multifidis, rotator Longus and brevis, intertransversarii, levator costarum brevis

Question 11

What is the orientation of the superior articular facet of T1?

Answer 11

The face backward, upward and lateral (BUL)

Question 12

What is the orientation of the inferior articular facet of T1?

Answer 12

They face forward, downward and medial (ForMeD)

Question 13

How many synovial joints are present at T1?

Answer 13

Ten

Question 14

What is the angulation of the spinous process of T1?

Answer 14

The undersurface of the T1 spinous process will be nearly horizontal from the horizontal plane

Question 15

What name is used to ID the topographical landmark at the base o the neck>

Answer 15

Vertebral prominence

Question 16

Which vertebrae have been IDed as forming the vertebral prominece?

Answer 16

C6, C7, T1

Question 17

What is the gender bias associated with T1 as the vertebral prominence?

Answer 17

Males (9%), Females (6%)

Question 18

What muscles attach to the spinous process fo T1?

Answer 18

The traps, rhomboid major, Serratus posterior superior, spinalis thoracis, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidis, rotators and interspinalis

Question 19

Which muscles attaching to the spinous process of T1 are not included in any muscle layer of the true back?

Answer 19

Splenius capitis and interspinalis

Question 20

What joint classifications are present at the T1 vertebra?

Answer 20

Fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis, and synovial plane (diarthrosis arthrodia)