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Flashcards in Spinal Lecture 3 Deck (137)
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1

what shape are the superior and inferior surfaces of the vertebral body?

kidney shaped and quite flat

2

lateral to the anterior longitudinal ligament is the attachments of the ___ of the diaphragm (upper _ lumbar on right, upper _ lumbar on left)

attachments of the CRURA of the diaphragm (upper 3 lumbar on the right, upper 2 lumbar on left)

3

what is an apophysis

a rim of smoother, less pitter, raised surface which is the second ossification centre of the vertebral body

4

what is found on the posterior surface of the vertebral body to transmit the nutrient arteries?

nutrient foramen

5

what attaches/projects from the lateral edges of the posterior surface of the vertebral body, more superior then inferior?

pedicles

6

what is the function of the pedicles?

transmit tension and bending forces

7

are pedicles short or long?

short

8

do pedicles overlap one another?

No except in the T-spine

9

what projects from each pedicle toward midline?

lamina

10

lamina fuse together forming the roof of the ___

neural arch

11

what is the function of the lamina?

disperse forces applied to the SAPs and IAPs

12

describe the superior edges of the lamina

irregular and sharp

13

describe the lateral edge of the lamina

rounded and smooth

14

where is the inferior articular process (IAP) found?

at the inferolateral corner of the lamina

15

where is the superior articular process of the lamina found?

superior (and with the pedicle)

16

describe the lamina

broad, triangular

17

do the lamina overlap?

yes but not as much as the thoracic

18

what defines the vertebral foramen?

the lamina

19

describe the superior and inferior surfaces of the superior articular process (facet)

concave (superior and convex (inferior) surfaces

20

which direction does the superior articular process (facet) face in the L-spine?

faces posteromedially - important for function

21

which direction does the inferior articular process (facet) face in the L-spine?

faces anterolaterally

22

what is the function of the zygoapophyseal joint?

resists forward sliding and twisting

23

what is another name for fat pads in the lumbar spine?

fibroadipose tissue or meniscoids

24

what forms the vertebral foramen?

nerual arch and the back of the vertebral body

25

what shape is the vertebral foramen?

traingular

26

Compare the size of the vertebral foramen in the L-spine to the C-spine and T-Spine.

Larger then in the thoracic spine and smaller than in the cervical spine

27

Explain why the L-spine vertebral foramen are larger than  the thoracic foramen and smaller than cervical foramen.

Size is based on neural distrubution and increased need for mobility (needs more room for spinal cord to move).

28

because conventional surgies are often done in the prone position how are the anterior and posterior walls of the vertebral foramen described?

identified as the floor (anterior) and roof (posterior)

29

below what level does the vertebral foramen house the cauda equina (tail of the spinal cord)

below L2

30

the spinous process projects ___ from the junction of the __

the spinous process projects POSTERIORLY from the junction of the LAMINA