typical thoracic vertebrae T2-T8 Flashcards Preview

Spinal Anatomy Exam 2 > typical thoracic vertebrae T2-T8 > Flashcards

Flashcards in typical thoracic vertebrae T2-T8 Deck (44):
1

what features will allow discrimination between T2-T4 and T5-T8 segmental groups?

vertebral body, transverse process, articular process and spinous process

2

what is the outline of the vertebral body of a typical thoracic from superior view?

triangular

3

on cranial view, what is the outline of the vertebral body for the T5-T8 group?

left side of the vertebral body will be flattened, the right side convex

4

what is the name given to the left side appearance of the vertebral body of T5-T8?

aortic impression

5

what part of the vertebral body is most influenced by the aorta at T5-T8?

left side superior and inferior epiphyseal rims

6

what is the height pattern of the typical thoracic vertebral body?

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

7

what is the height pattern of intervertebral discs in the typical thoracic region?

intervertebral discs are rather planar or flat with no apparent height difference between anterior and posterior heights

8

what is the principal cause of the posterior curve of the thoracic spine?

vertebral body height differences

9

what is another way of naming a posterior curve pattern?

kyphotic curve

10

what joint classifications are identified at the vertebral body of a typical thoracic?

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

11

how many synovial joints are formed at the vertebral body of a typical thoracic?

4

12

how many symphysis joints are formed with the vertebral body of a typical thoracic?

2

13

how many syndesmosis joints are formed at the vertebral body of a typical thoracic?

typically 4 are identified (as many as 8 if the costocentral stellate/radiate ligaments are included)

14

how many joints are formed at the vertebral body of a typical thoracic?

typically 10 (14 if the costocentral stellate/radiate ligaments are included)

15

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

costocentral joint

16

how many costocentral joints are formed at the vertebral body of a typical thoracic?

4

17

which of the demi-facets on the vertebral body of a typical thoracic is larger?

superior costal demi-facet

18

what feature will provide assistance in maintaining the stability of the intervertebral foramen in the typical thoracics?

costocentral joint or ribs

19

what ligaments support the costocentral joint?

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

20

what ligaments support the costocentral joint?

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

21

what does the costocentral intra-articular or interarticular ligament connect to?

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

22

what is the size relationship between the articulating surface of the head of the rib and the costal demi-facet surface?

rib surface is greater than the costal demi-facet surface

23

which muscle is attached to the vertebral body of T2 and T3?

longus colli

24

what is the position and direction of the pedicle from the typical thoracic vertebral body?

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

25

what is the angulation of the pedicle in the typical thoracic region?

10-15 degrees posterolateral from the sagittal plane

26

which x-ray view is used to see into the intervertebral foramen of a typical thoracic?

lateral view

27

what is overlap of the lamina called in the typical thoracic region?

shingling

28

what is the outline of the vertebral foramen in the typical thoracic region?

oval to circular

29

in which plane will the size of the vertebral foramen of a typical thoracic be greatest?

transverse plane, the vertebral transverse diameter

30

what are the osseous parts of the costotransverse joint?

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

31

what ligaments support the costotransverse joint of a typical thoracic?

superior costotransverse, inferior costotransverse, and lateral costotransverse ligaments

32

which muscles may attach to the transverse process of a typical thoracic?

longissimus thoracic, longissimus cervicis, longissimus capitis, semispinalis thoracis, semispinalis cervicis, semispinalis capitis, multifidus, rotator longus, rotator brevis, intertransversarii, levator costarum longus and levator costarum brevis

33

how can you distinguish between a T2-T4 from T5-T8 segment using the articular process?

at T2-T4 the width between the superior articular processes is greater than the width between the inferior articular processes of that vertebra. at T5-T8 the width between the superior articular processes is equal to or the same as the width between the inferior articular processes of that vertebra

34

what is the orientation of the superior articular facet of a typical thoracic?

they face backward, upward, and lateral (BUL)

35

what is the orientation of the inferior articular facet of a typical thoracic?

they face forward, downward, and medial (ForMeD)

36

how many synovial joints are present at a typical thoracic?

10

37

how many synovial joint surfaces for ribs are present on a typical thoracic?

6

38

identify the synovial joint surfaces for ribs that are present on a typical thoracic

2 superior costal demi-facets, 2 inferior costal demi-facets, 2 transverse costal facets

39

what is the name given to the overlap of spinous processes in the thoracic region?

imbrication

40

imbrication will be more pronounced for what region of the thoracics?

T5-T8

41

which thoracic has the longest spinous process?

T8

42

what is the angulation of the spinous process in the typical thoracic region?

the undersurface of T2-T4 spinous processes will angle up to 40 degrees from the horizontal plane. the undersurface of T5-T8 spinous processes will angle up to 60 degrees from the horizontal plane

43

which muscles may attach to the spinous process of a typical thoracic?

trapezius, latissimus dorsi, rhomboid major, serratus posterior superior, splenius cervicis, splenius capitis, spinalis thoracis, spinalis cervicis,

44

which muscles may attach to the spinous process of a typical thoracic?

trapezius, latissimus dorsi, rhomboid major, serratus posterior superior, splenius cervicis, splenius capitis, spinalis thoracis, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidus, rotator longus, rotator brevis and interspinalis