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Flashcards in sacral spinal nerves Deck (14)
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0

how many pairs of sacral spinal nerves are there

5

1

as the sacral spinal nerves descend inside of the dura they form what

much of the cauda equina

2

what does each sacral nerve divide into

anterior primary ramus and posterior primary ramus

3

where do the posterior primary rami of S1-S4 travel through

the four posterior sacral foramina

4

where does the S5 posterior ramus travel through

the sacral hiatus

5

what do the posterior primary rami of S1-S3 divide into

medial and lateral branches

6

what does the medial branches from S1-S3 supply

adjacent multifidi

7

what do the lateral branches of the posterior primary rami of S1-S3 combine with to supply the skin over the buttocks

L5 and S4

8

the posterior primary rami of S4 and S5 unite with the coccygeal posterior rami to supply what

the skin over the coccyx

9

where do the anterior primary rami of S1-S4 travel thorugh

the four anterior sacral foramina

10

the S5 anterior ramus travels through what?

the sacral hiatus

11

what do the anterior primary rami of S1-S5 contribute to

the sacral plexus (S1-S4) and the coccygeal plexus (S4,S5)

12

how many sacral sympathetic ganglia are typical

3-4

13

how will the anterior primary ramus of each sacral nerve recieve postganglionic sympathetic fibers

gray ramus communicans