1/12/2016 Spinal Questions Flashcards Preview

Spinal Anatomy Test 2 Quiz Questions > 1/12/2016 Spinal Questions > Flashcards

Flashcards in 1/12/2016 Spinal Questions Deck (58)
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1
Q

How many joints are traditionally observed at each lumbar vertebral body

A

L1-L5 = six each

2
Q

What is the the inferior articular facet orientation at each lumbar vertebra?

A

L1-L5 = forward, downward, lateral (FoLD)

3
Q

What part of the sacral all is derived from the costal element?

A

The anterior two-thirds

4
Q

The costal element and true transverse process of sacrum unite to form what feature?

A

Sacral Ala

5
Q

How many fibrous (Amphiarthrosis) Syndesmosis joint surfaces are present on the S1 vertebral body?

A

Four

6
Q

How many joint surfaces are present on the vertebral body of the first sacral segment?

A

Five

7
Q

What muscle(s) may attach to the first sacral vertebral body?

A

Psoas major

8
Q

What is the reported angulation of the first sacral articular facets?

A

They lie vertically in the coronal plane

9
Q

What is the position of the sacral zygapophysis in adults?

A

The zygapophysis lies in the coronal plane for L5/S1

10
Q

What is the orientation of the first sacral superior articular facet?

A

Backward, upward, medial (BUM); typically concave

11
Q

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

A

Mammillary process

12
Q

From the anterior view, the intervertebral discs of sacrum will be replaced by what feature?

A

Transverse ridges

13
Q

An imaginary line drawn along the dorsal midline of sacrum is identified as the __________.

A

Median sacral crest

14
Q

What forms the median sacral crest?

A

Fused spinous processes and their spinous tubercles

15
Q

What is the name given to the congenital condition in which the fifth lumbar spinous process is elongated, the sacrum exhibits spina bifida, and dorsiflexion produces pain?

A

Knife Clasp Syndrome

16
Q

An imaginary line drawn from the superior articular process of S1 to the sacral Cornu will form what feature?

A

Immediate sacral crest

17
Q

What forms the intermediate sacral crest?

A

Fused articular processes and their facets

18
Q

What features may be identified along the intermediate sacral crest?

A

The mammillary process of S1 and the sacral Cornu of S5

19
Q

What is the remnant of the inferior articular process and facet of S5?

A

The sacral Cornu

20
Q

What is the name of the inferior opening of the sacral spinal canal?

A

The sacral hiatus

21
Q

What forms the lateral sacral crest?

A

The fused transverse processes and transverse tubercles from S1 to S5

22
Q

What is the sacral tuberosity?

A

The enlarged transverse tubercle of S2

23
Q

What is the name of the joint formed by the sacral tuberosity?

A

The accessory sacral-iliac joint

24
Q

What muscle is said to attach to the dorsal surface of sacrum?

A

Iliac us

25
Q

What feature is identified on the lateral surface of S1-S3?

A

Auricular surface

26
Q

What classification of joint is formed by the Auricular surface of sacrum?

A

Synovial plane (diarthrosis arthrodia)

27
Q

What feature does the anterior surface of the superior epiphyseal rim of S1 form?

A

The sacral promontory

28
Q

What ligament is attached to the sacral hiatus?

A

The superficial posterior sacrococcygeal ligament

29
Q

how many synovial joints are typically present at sacrum?

A

Four

30
Q

What joint classifications are typically present at sacrum?

A

Fibrous (Amphiarthrosis) Syndesmosis, cartilaginous (Amphiarthrosis) symphysis and synovial plane (diarthrosis arthrodia)

31
Q

How many synovial joints are maximally observed at each lumbar vertebra?

A

L1-L5 = four each

32
Q

What forms the posterior boundary for the fifth sacral spinal nerve intervertebral foramen?

A

Sacral Cornu, coccygeal Cornu, superficial posterior sacrococcygeal ligament and intercornual ligament

33
Q

What forms the anterior boundary for the fifth sacral spinal nerve intervertebral foramen?

A

Vertebral body S5, vertebral body Co1, deep posterior sacrococcygeal ligament and intervertebral disc

34
Q

What is the homologous for the posterior longitudinal ligament at S5?

A

Deep posterior sacrococcygeal ligament

35
Q

What is the homolog for the anterior longitudinal ligament at S5?

A

Anterior sacrococcygeal ligament

36
Q

What is the homolog for the ligament flavum at S5?

A

Superficial posterior sacrococcygeal ligament

37
Q

What forms the inferior boundary for the spinal canal?

A

The Union of the superficial posterior and deep posterior sacrococcygeal ligaments

38
Q

What ligaments is formed by the union of the superficial posterior sacrococcygeal and the deep posterior sacrococcygeal ligaments at Co1?

A

The posterior sacrococcygeal ligament

39
Q

What ligament is a homolog of the intertransverse ligament at S5?

A

Lateral sacrococcygeal ligament

40
Q

What ligament divides the sciatic foramen into the greater and lesser sciatic foramina?

A

Sacrospinous ligament

41
Q

Which ligament has broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischia like tuberosity?

A

Sacrotuberous ligament

42
Q

Which ligament represents a thickening of the fibrous capsule of the sacrococcygeal-iliac joint?

A

Anterior sacro-iliac ligament

43
Q

Which ligament is the strongest of the sacro-iliac ligaments and is penetrated by the dorsal rami of the sacral spinal nerves?

A

Interosseous sacro-iliac ligament

44
Q

Which ligament will attach the intermediate sacral crest of S1, lateral sacral crest of S2 to the posterior superior iliac spine?

A

Short posterior sacro-iliac ligament

45
Q

Which ligament attaches the lateral sacral crest of S3 and S4 to the posterior superior iliac spine?

A

Long posterior sacro-iliac ligament

46
Q

What is the homolog for the capsular Ligament at S5?

A

Intercornual ligament

47
Q

What is the number of coccygeal somites?

A

Ten

48
Q

What is the typical number of segments that unite to form the adult coccyx?

A

4 segments

49
Q

When is ossification of coccyx completed?

A

About age 30

50
Q

What is the direction of fusion off coccygeal segments?

A

From caudal to cranial, the last segments to fuse together are Co1 and Co2

51
Q

What is the direction of fusion of coccygeal segments?

A

From caudal to cranial, the last segments to fuse together are Co1 and Co2

52
Q

What is the direction of the coccygeal curve?

A

Posterior (Kyphotic)

53
Q

What is the major motion and range of motion for coccyx?

A

Flexion-extension, 5-20 degrees

54
Q

How many coccygeal nerves are present in the fetus?

A

Typically 5 pairs of coccygeal nerves are present

55
Q

How many coccygeal nerves are present in the adult?

A

Typically only one pair of coccygeal nerves remain in the adult

56
Q

What forms the coccygeal nerve plexus?

A

S4, S5 and Co1 nerves

57
Q

What is the ganglion impar?

A

A midline sympathetic ganglion

58
Q

What innervates the coccygeal glom us or coccygeal body?

A

Both sympathetic and parasympathetic fibers are identified