Rexed's Laminae

Question 1

I

Answer 1

Posteriomarginal nucleus

Question 2

II

Answer 2

Substantia gelatinosa

Continuous with spinal trigeminal tract and nucleus in medulla

Question 3

III-IV

Answer 3

Nucleus proprius (principal sensory nucleus)

Question 4

V-VI

Answer 4

Base of posterior horn

Question 5

VII

Answer 5

Intermediate zone

Contains IMLCC, sacral visceromotor nucleus, dorsal nucleus of Clarke (posterior spinocerebellar tract)

Question 6

VIII

Answer 6

Intermediate region

Interneurons

Question 7

IX

Answer 7

Intermediate region
Contains alpha and gamma motor neurons

Accessory and phrenic nuclei

Question 8

X

Answer 8

Region surrounding central canal

Question 9

Medial neurons

Answer 9

Proximal muscles

Question 10

Lateral neurons

Answer 10

Distal muscles

Question 11

Anterior neurons

Answer 11

Extensor muscles

Question 12

Posterior neurons

Answer 12

Flexor muscles