Day 13 Flashcards Preview

Spinal Anatomy Test 1 > Day 13 > Flashcards

Flashcards in Day 13 Deck (27):
0

In horizontal view, what direction of the spinal cord tends to be largest?

transverse

1

What are the spinal cord enlargement locations and the name given to each?

C3-T1, the cervical enlargement; T9-T12; the lumbar (lumbosacral) enlargement

2

Where is the greatest transverse diameter of the spinal cord?

C6

3

In which plane (or direction) will the diameter of the spinal decrease from C2-T1

midsagittal or anterior-posterior plane

4

What spinal nerves originate from the lumbar (lumbosacral) enlargement?

L1-S3 spinal nerves

5

What is a generic cord level of origin- vertebral level combination for the lumbar (lumbosacral) enlargement?

L1, L2 cord levels in T9 vertebra; L3, L4 cord levels in T10 vertebra; L5, S1 cord levels in T11 vertebra; S2, S3 cord levels in T12 vertebra

6

What is the caudal end of the spinal cord called?

conus medullaris

7

What spinal nerves originate from the conus medullaris?

typically S4, S5 and Co1

8

In which verterbal foramen will the conus medullaris typically be observed?

L1

9

What is the name given to the nerve roots below L1?

cauda equina

10

What is the continuation of pia mater below the conus medullaris called?

filum terminale internum

11

What is the location and name given to the area where all meninges first converge at the caudal part of the vertebral column?

typically S2, the dural cul de sac

12

Neural tissue has been identified in what part of the filum terminale?

proximal part of the filum terminale internum

13

What is the name given to the condensation of meninges below S2?

filum terminale externum

14

What is the name given to the caudal attachment of the meninges?

coccygeal medullary vestige

15

What is the name given to the condition in which the conus medullaris is located below L1 ad the filum terminale is thickened?

tethered cord syndrome

16

What is the relationship between spinal nerve number, rib number and vertebral number in a thoracic intervertebral foramen?

the spinal nerve number relates to the upper segment number in the vertebral couple
the rib number relates to the lower segment number in the vertebral couple. I.E. T3 nerve exits the intervertebral foramen formed by T3/T4 and rib 4 joints with this vertebral couple

17

Which mammals have more than seven cervical vertebrae?

ant bear, three-toed sloth

18

Which mammals have less than seven cervical vertebrae?

two-toed sloth, manatee

19

Which vertebrae are typical cervicals?

C3-C6

20

Which vertebrae are atypical cervicals?

C1, C2, C7

21

What is the shape of the typical cervical vertebral body form the cranial view?

rectangular

22

What is the appearance of the typical cervical vertebral body from the lateral view?

posterior height is greater than anterior height by a few millimeters

23

What would be the direction of the cervical curve based on osseous features?

posterior or kyphotic

24

What accounts for the direction of the typical cervical curve?

the intervertebral disc height

25

What is the direction of the typical cervical curve?

anterior or lordotic

26

At which vertebral couple will the cervical curve again increase intervertebral disc height?

C5/C6