Spinal Cord

Question 1

what are the 2 major enlargements of the spinal cord?

Answer 1

plexi –> lumbosacral & brachial

Question 2

what level does the SC terminate?

Answer 2

L12

Question 3

Conus medullaris

Answer 3

end of the spinal cord

Question 4

Cauda equina

Answer 4

cord ends, thread-like structures which form spinal nerve and exit the VC

Question 5

Filum terminale

Answer 5

ensures the whole SC is taut –> layers tapering down & forming thread-like structure
- inserts into coccyx
-

Question 6

how many segments in the cervical SC?

Answer 6

8

Question 7

how many segments in the thoracic SC?

Answer 7

12

Question 8

how many segments in the lumbar SC?

Answer 8

5

Question 9

how many segments in the sacral SC?

Answer 9

5

Question 10

how many segments in the coccyx SC?

Answer 10

1-2

Question 11

What are the 3 layers which protect the SC?

Answer 11

1. dura mater (outer)
2. arachnoid (2nd)
3. pia mater (inner)

Question 12

what is the name for the layers which protect the SC?

Answer 12

meninges

Question 13

what can the grey matter of the SC be divided into?

Answer 13

horns –> posterior, anterior, lateral

Question 14

what is the white matter of the SC?

Answer 14

columns / tracts