Exam 2 Part 1 Spinal Cord Flashcards Preview

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Flashcards in Exam 2 Part 1 Spinal Cord Deck (20):
1

Superior boundary of the spinal cord

Foramen magnum

2

Inferior boundary of the spinal cord

The disc b/t vertebrae levels L1-2 (cauda equina is found here)

3

How many spinal nerve roots are there

31 on each side

4

Each nerve will have a _____ & _____ roots, w/in the vertebral canal.

Dorsal & ventral

5

The Bell-Megendi law states:

Dorsal roots contain sensory (afferent) fibers & ventral roots are motor (efferent) fibers. (we now know a few afferent fibers come through on the ventral root

6

Cervical nerves C1- C8 are named for the bone ______

Below
ex. C4 exits IVF b/t C3 & C4 vertebrae

7

Thoracic nerves T1- T12 vertebrae are named for the bone _____

Above
Ex. T6 exits b/t T6 & T7

8

Lumbar nerves L1-L5 Named for bone ____

Above
EX. L1 exits b/t L1 & L2

9

Sacral nerves S1 - S4 exit

The dorsal & ventral sacral foramina

10

S5 exits:

@ the sacral hiatus

11

Coccygeal nerve Co1 exits:

Sacral hiatus (could be missing)

12

T/F During the first 3 months of embryonic development the cord and the vertebral column are approx. the same length?

True

13

During the rest of gestation the vertebral column lengthens more rapidly than the cord. At birth the Co1 CORD level is typically @ the same level as the ______ vertebra

L1-L3

14

By adulthood the Co1 level is found @ the ______ vertebral level.

L1-L2

15

Tapering of the spinal cord is called the:

Cauda medullaris

16

The roots for the lumbar, sacral & coccygeal nerves will run for an extended distance, below the cord making up the

Cauda equina

17

Cranially the central canal is continuous with the

M.O and the 4th ventricle

18

Inferiorly the central canal expands in the conus medullaris as a:

Terminal ventricle

19

Terminal ventricle is found:

Inside the cord

20

Lumbar cistern is:

Both filled w/ CSF and outside the cord