Atypical Thoracic: T1 Flashcards Preview

Spinal Anatomy I - Exam 2 > Atypical Thoracic: T1 > Flashcards

Flashcards in Atypical Thoracic: T1 Deck (78):
1

Which thoracic segments are considered the atypical thoracic?

T1, T9-T12

2

What is the outline of the vertebral body of T1 from superior view?

Somewhat rectangular with curved anterior margins

3

What is the appearance of the vertebral body of T1 from the anterior view?

Both sides will appear to be scalloped (indented) between the epiphyseal rims

4

What is the height pattern of the T1 vertebral body?

The posterior height is greater than the anterior height by one to two millimeters

5

What is the appearance of the superior surface of the vertebral body of T1?

It is somewhat cup-shaped with elevations at the posterior and lateral margin

6

What may the elevations on the vertebral body of T1 represent?

Uncinate processes

7

What is the appearance of the inferior surface of the vertebral body of T1?

Typically flat, lacking anterior and posterior lips characteristic of the cervicals

8

What joints are identified at the vertebral body of T1?

- vertebral body to the longitudinal ligaments at the epiphyseal rims
- vertebral body to vertebral body via the intervertebral discs
- vertebral body to the head of a rib (costocentral joint)

9

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

- fibrous (amphiarthrosis) syndesmosis
- cartilaginous (amphiarthrosis) symphysis
- synovial plane (diarthrosis arthrodia)
- the modified synovial saddle (diarthrosis sellar) is only observed as an anatomical variation

10

What are examples of fibrous (amphiarthrosis) syndesmosis joints at the T1 vertebral body?

- superior and inferior epiphyseal rims to anterior longitudinal ligament
- superior and inferior epiphyseal rims to posterior longitudinal ligament

11

What are examples of cartilaginous (amphiarthrosis) symphysis joints at the T1 vertebral body?

- superior epiphyseal rim to intervertebral disc
- inferior epiphyseal rim to intervertebral disc

12

What are examples of synovial plane (diarthrosis arthrodia) at the T1 vertebral body?

- superior costal facet to articular surface of the head of the first rib
- inferior costal demi-facet to superior articular surface of head of the second rib

13

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

four normally

14

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

two

15

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

typically four are identified (as many as eight if the rib articulation is included)

16

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

typically ten (fourteen if the rib ligaments are included)

17

What is the name given to the joint formed between the vertebral body and rib?

costocentral joint

18

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

four

19

What synovial joint surfaces are present on the T1 vertebral body?

- the right and left superior costal facet
- the right and left inferior costal demi-facet

20

What is the relationship between the vertebral body surface and the rib head surface in the costocentral joints of T1?

- the superior costal facet of the vertebral body will joint completely with the articular surface of the head of the first rib
- the inferior costal demi-facet of the vertebral body will joint with the superior articular surface of the head of the second rib

21

What is the rib-vertebral body combination at the intervertebral foramen for the eighth cervical nerve?

the superior costal facet of T1 will joint with the articular surface of the head of the first rib

22

What is the rib-vertebral body combination at the intervertebral foramen for the first thoracic nerve?

- the inferior costal facet of T1 will joint with the superior articular surface of the head of the second rib
- the superior costal demi-facet of T2 will joint with the inferior articular surface of the head of the second rib

23

What ligament supports the costocentral joint of the first rib?

the costocentral stellate/radiate ligament

24

What ligaments support the costocentral joint of the second rib?

- the costocentral stellate/radiate ligament
- the costocentral interarticular or intra-articular ligament

25

The costocentral stellate/radiate ligament will attach to what features?

the head of the rib and the vertebral bodies and intervertebral disc at the costocentral joint

26

The costocentral stellate/radiate ligament will attach to which segment(s) at the C8 spinal nerve intervertebral foramen?

the vertebral body of C7 and the vertebral body of T1

27

The costocentral stellate/radiate ligament will attach to which segment(s) at the T1 spinal nerve intervertebral foramen?

the vertebral body of T1 and the vertebral body of T2

28

What does the costocentral intra-articular or interarticular ligament attach to?

the interarticular or intra-articular crest of the head of the rib and the intervertebral disc

29

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

longus colli

30

What is the position and direction of the pedicle from the vertebral body of T1?

the pedicle arises from the upper third of the vertebral body and projects posterior and slightly laterally

31

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

32

What is the direction of the transverse process at T1?

the transverse process projects nearly straight out

33

What is present at the tip of the transverse process of T1?

the transverse tubercle

34

What is present on the transverse tubercle of T1?

the transverse costal facet

35

What is the rib-transverse process relationship for T1?

the first rib articulates with the transverse costal facet of T1

36

What is the orientation of the transverse costal facets for T1?

they face forward and outward

37

What is the classification of the costotransverse joint?

synovial plane (diarthrosis arthrodia)

38

What are the osseous parts of the costotransverse joint?

the transverse costal facet and the articular surface of the tubercle of a rib

39

What ligaments support the costotransverse joint of T1?

the inferior costotransverse and lateral costotransverse ligaments

40

What ligament is absent at the costotransverse joint of T1?

the superior costotransverse ligament

41

What ligaments attach to the transverse process of T1?

- intertransverse
- capsular costotransverse
- superior costotransverse
- inferior costotransverse
- lateral costotransverse

42

Which costotransverse joint will the superior costotransverse ligament of T1 support?

the second rib costotransverse joint

43

The superior costotransverse ligament of rib two will attach to which segmental bony feature?

the transverse process of T1

44

The superior costotransverse ligament of the transverse process of T1 will attach to which rib?

the second rib

45

The inferior costotransverse ligament of rib one will attach to which segmental bony feature?

the transverse process of T1

46

The inferior costotransverse ligament of the transverse process of T1 will attach to which rib?

the first rib

47

The lateral costotransverse ligament of rib one will attach to which segmental bony feature?

the transverse process of T1

48

The lateral costotransverse ligament of the transverse process of T1 will attach to which rib?

the first rib

49

What joint classification is associated with the intertransverse, superior costotransverse, inferior costotransverse, and lateral costotransverse ligaments?

fibrous (amphiarthrosis) syndesmosis

50

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

51

Which examples of the erector spinae group attach to the transverse process of T1?

longissimus muscles

52

Which examples of the erector spinae group will not attach to the transverse process of T1?

spinalis and iliocostalis muscles

53

Which examples of the transversospinalis muscle group attach to the transverse process of T1?

semispinalis, multifidis, and rotators

54

Which specific transversospinalis muscle is absent from T1?

semispinalis thoracis

55

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

backward, upward, lateral (BUL)

56

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

forward, downward, medial (ForMeD)

57

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

they are slightly convex

58

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

they are slightly concave

59

What is the classification of the articular facet joint?

synovial plane (diarthrosis arthrodia)

60

How many synovial joints are present at T1?

ten

61

Identify the synovial joint surfaces present at T1.

- two superior costal facets
- two inferior costal demi-facets
- two transverse costal facets
- two superior articular facets
- two inferior articular facets

62

How many synovial joint surfaces for ribs are present at T1?

six

63

Identify the synovial joint surfaces for ribs that are present at T1.

- two superior costal facets
- two inferior costal demi-facets
- two transverse costal facets

64

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

65

What is the name of the osseous feature at the tip of the spinous process?

the spinous tubercle

66

What ligaments attach to the spinous process of T1?

the interspinous and supraspinous ligaments

67

Ligaments attaching to the spinous process of T1 have what joint classificaion?

fibrous (amphiarthrosis) syndesmosis

68

What muscles attach to the spinous process of T1?

- trapezius
- rhomboid minor
- serratus posterior superior
- splenius capitis
- spinalis thoracis
- spinalis cervicis
- spinalis capitis
- semispinalis thoracis
- multifidis
- rotator longus
- rotator brevis
- interspinalis

69

Of the muscles attaching to the spinous process of the thoracics, which ones will attach only to the T1 vertebral segment?

rhomboid minor

70

Which erector spinae muscles will attach to the spinous process of T1?

spinalis muscles

71

Which erector spinae muscles will not attach to the spinous process of T1?

longissimus and iliocostalis muscles

72

Which transversospinalis muscles will attach to the spinous process of T1?

semispinalis, multifidis, and rotators

73

Which of the muscles of the five layers of the true back are present at the spinous process of T1?

- trapezius
- rhomboid minor
- serratus posterior superior
- spinalis thoracis
- spinalis cervicis
- spinalis capitis
- semispinalis thoracis
- multifidis
- rotator longus
- rotator brevis

74

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

splenius capitis and interspinalis

75

What joint classifications are present at the T1 vertebra?

- fibrous (amphiarthrosis) syndesmosis
- cartilaginous (amphiarthrosis) symphysis
- synovial plane (diarthrosis arthrodia)

76

At what parts of T1 will a fibrous (amphiarthrosis) syndesmosis joint be observed?

- vertebral body
- lamina
- transverse process
- spinous process

77

At what part of T1 will a cartilaginous (amphiarthrosis) symphysis joint be observed?

vertebral body

78

At what parts of T1 will a synovial plane (diarthrosis arthrodia) joint be observed?

- vertebral body
- transverse process
- articular process