unit 6: sacral spinal nerves

Question 1

there are __ pairs of sacral spinal nerves, which descend inside dura from much of the cauda equina

Answer 1

5

Question 2

the PPR & APR of S1-S4 travel through their four respective __ ___, while S5 travels thru the __ ___

Answer 2

sacral foramina

sacral hiatus

Question 3

sacral PPR __ in size from superior to inferior

Answer 3

decrease

Question 4

the PPR of __-__ divide into medial and lateral branches

Answer 4

S1-S3

Question 5

the MEDIAL PPR branches supply the adjacent ___ and the LATERAL combine w/ branches from L5 & S4 to supply the skin over the __

Answer 5

multifidi

buttocks

Question 6

the PPR of __ & ___ unite with the coccygeal posterior rami to supply the skin over the __

Answer 6

S4 & S5

coccyx

Question 7

the APR of S1-S4 contribute to the ___ plexus and APR from S4, S5 contribute to the ___ plexus

Answer 7

sacral

coccygeal

Question 8

there are usually 3-4 __ __ ___

Answer 8

sacral sympathetic ganglia

Question 9

the APR of each sacral nerve receives postganglionic symp fibers via a:

Answer 9

gray ramus communicans