Typical Lumbars L1-L4 Flashcards Preview

Spinal Anatomy Exam 2 > Typical Lumbars L1-L4 > Flashcards

Flashcards in Typical Lumbars L1-L4 Deck (54):
1

What accounts for the direction of the lumbar curve?

the vertebral body and intervertebral disc have a greater anterior height that posterior height

2

What is the effect of aging on the vertebral body of a lumbar vertebra?

Decrease in height, increase circumference

3

How many joint surfaces are present of the vertebral body of a typical lumbar?

six

4

What muscles may attach to a typical lumbar vertebral body?

psoas major and psoas minor

5

Psoas minor will only attach to the vertebral body of which segments?

T12, L1

6

What ligaments attach the vertebral body to the transverse process?

corporotransverse ligaments

7

Hofmann ligaments are identified in which regions along the vertebral column?

Cervical- upper thoracic region and lumbar region

8

Cervical - upper thoracic Hofmann ligaments will attach what structures together?

dura mater to segments above

9

What is the highest level know to demonstrate Hofmann ligaments?

C6

10

What is the proposed function of the cervical -upper thoracic Hofmann ligaments?

resist caudal movement of the dural sac; rests gravitational forces on the dura and cord

11

Lumbar Hofmann ligaments will attach what structures together?

dura mater to lower segmental levels

12

What is the proposed function of the lumbar Hofmann ligaments?

rests cranial movement of the dural sac during flexion

13

What is the proposed function of the proximal root sleeve ligaments?

rests displacement of the peripheral nerve system in the intervertebral foramen

14

What osseous conditions of lumbar vertebrae facilitate a spinal tap in this region?

overlap of the laminae, shingling, diminishes; overlap of spinous processes, imbrication, diminishes

15

What is the outline of the vertebral foramen of a typical lumbar vertebra?

triangular

16

Which is the greatest diameter of the vertebral foramen of typical lumbars?

trasverse

17

What part of the central nerve system is present in the lumbar spine?

the conus medullar is is typically present in the vertebral foramen of L1

18

What part of the peripheral nerve system is present in the lumbar spine?

the cauda equina is typically present in the vertebral foramina of L2-L4

19

Beginning with the L1 transverse process, what is the generic direction and relative length of each succeeding lumbar transverse process?

each transverse process is directed straight lateral and increases in length from L1-L3; L4 then begins to decrease in length

20

What is the name of the elevation near the origin of the lumbar transverse process?

accessory process

21

A styloid process occurs with what frequency and as a result of what condition?

7% occurrence as a result of congenital elongation of the lumbar accessory process

22

What parts of a vertebra are attached via the mammillo-accessory ligament?

the mammillary process and accessory process of the same segment

23

What was believed to be entrapped by the mammillo-accessory ligament?

the medial branch of the dorsal ramus of a lumbar spinal nerve

24

What muscles attach to the lumbar accessory process?

longissimus thoraces and intertransversarii

25

What muscles may attach to the transverse process of a typical lumbar vertebra?

psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus, and intertranversarii

26

What are the posterior elements of the vertebra?

zygapophysis, lamina and spinous process

27

What are the anterior elements of the vertebra?

vertebral body and pedicle

28

What is the orientation of the typical lumbar superior articular facet?

backward, upward, medial (BUM); typically concave

29

What is the orientation of the typical lumbar inferior articular facet?

forward, lateral, downward (FoLD); significant convexity

30

What is the name given to the projection on the lumbar superior articular process?

mammillary process

31

What muscles will attach to the mammilllay process?

multifidis and intertransverarii

32

What ligament will attach to the lumbar superior articular process and transverse process?

mammillo-accessory ligament

33

What is the position of the lumbar zygapophysis in adults?

the zygapophysis lies in the sagittal plane for L1/L2, L2/L3, and L3/L4; the zygapophysis lies in the coronal plane for L4/L5 and L5/S1

34

What name is given to zygapophyses between vertebral couples that lie in the same plane?

joint symmetry

35

What names are given to the condition in which one zygpophysis of a vertebral couple lies in the coronal plane and the other zygapophysis lies i the sagittal plane?

joint asymmetry or joint tropism

36

Define or describe joint tropism

the condition in which one zygapophysis of a vertebral couple lies in the coronal plane and the other zygapophysis lies in the sagittal plane

37

What is the names of the condition in which the typical lumbar spinous process increases in length due to the aging process?

Baastrup's syndrome or "kissing spines"

38

What is Baastrup's syndrome?

elongation of the lumbar spinous process as a result of aging?

39

What muscles will attach to the typical lumbar spinous process?

latissimus dorsi, serratus posterior inferior, iliocotalis lumborum, longissimus thoracis, spinalis thoracis, multifids, rotator longus, rotator brevis, and interspinalsi

40

What is the appearance of the fifth lumbar vertebral body from the lateral view?

anterior height is greater that posterior height by several millimeters; it appears to form a wedge on a lateral X-ray view

41

How many joint surfaces are present on the vertebral body of the fifth lumbar?

six

42

What joint classification will be observed at the vertebral body of the fifth lumbar?

cartilaginous (amphiarthrosis) symphysis and fibrous (amphiarthrosis) syndesmosis

43

What muscles attach to the fifth lumbar vertebral body?

psoas major

44

What is the name given to ligaments that attach the vertebral body to articular process?

transforaminal ligaments

45

What ligaments attach the vertebral body to the transverse process?

corporotransverse ligaments

46

What characteristic of L1-L4 pedicle may be used to differentiate it from the L5 segment? Be specific and complete as the differences on a segment from each group?

On cranial view, the lateral surface of the pedicle is apparent on a L1-L4 segment. At L5 the transverse process originates from the vertebral body, pedicle and lamina-pedicle region

47

What muscles may attach to the transverse process of the fifth thoracic vertebra?

psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus, and intertransversarii

48

What ligaments traditionally attach to the transverse process of the fifth lumbar vertebra?

lumbosacral, iliolumbar and mammillo-accessory ligaments

49

What is the reported angulation and X-ray appearance of the fifth lumbar articular facets?

they lie in the vertical plane and are coronal facets

50

What is the orientation of the fifth lumbar super articular facet?

backward, upward, medial (BUM); typically concave

51

What is the orientation of the fifth lumbar inferior articular facet?

forward, lateral, downward (FoLD); significant convexity

52

What is the names of the condition in which L5 spinous process increases in length due to aging?

Baastrup's syndrome or "kissing spines"

53

What is Knife Clasp syndrome?

The congenital condition in which the L5 spinous process is elongated, the carom exhibits spina bifida and dorsiflexion produces pain

54

What muscles will attach to the fifth lumbar spinous process?

latissimus dorsi, iliocostalis lumborum, longissimus thoracis, multifids, rotator longus, rotator brevis and interspinalis