Innervation of the Spine

Question 1

What do the Gray ramus comminicans innervate on vertebra (3)

Answer 1

1. Periosteum of the ant and lat paraspinal nerves
2. IVD, ant and lat portions of annulus fibrosus
3. Ant longitudinal lig

Question 2

What does the Gray ramus innervte

Answer 2

contains somatosensory fibres and post ganglionic sympathetic fibres that carry visceromotar innervation to respective dermatome

Question 3

What does the Sinuvertebral nerve (or reccurent nerve) innervate on vertebrea (3)

Answer 3

1. periosium of the posterior aspect of vertebral body (facing canal)
2. Posterior aspect of the IVD/ annulus fibrosus
3. Posterior longitudianl lig

Question 4

what does the lateral branches of PPR innervate on vertebrae (2)

Answer 4

1. periosteum of TVP
2. Intertransversus lig

Question 5

Myotome innervations of Lat PPR (5)

Answer 5

1. iliocostalis
2. longisimus
3. Splenius cervicus
4. Splenius capitus
5. Levetor costorum

Question 6

dermatomal innervation of Lat PPR

Answer 6

dermatomes below t7

Question 7

Medial PPR innervate on vertebrea

Answer 7

1. periosteum of post vert arch, SP
2. capsul of Z joint
3. lig flavum, interspinous lig, supraspinous lig, intertransversarii

Question 8

Myotomal innervation of medial PPR(6)

Answer 8

spinalis
longissimus
semispinalis
multifidus
rotators
interspinous

Question 9

dermatomal innervation of medial PPR

Answer 9

T7 above

Question 10

Ascending branch and descending branch of medial PPR innervate what things

Answer 10

ascending- supplies inferior 1/2 of z joint at the same level

Descending- supplies suerior 1/2 of z joint at level below