Rexa Lamina

Question 1

Rexa Lamina I

Answer 1

Thin cap over dorsal horn

Question 2

Rexa Lamina II

Answer 2

Substantia Gelatinosa

Pain reception center

Question 3

Rexa Lamina III and IV

Answer 3

Nucleus Proprius

Sensory of touch, pressure, etc.

Question 4

Rexa Lamina V

Answer 4

Reticular Formation - cervical part only (C1-C8)

Cell bodies for axons that cross and ascend to thalamus in spinal thalamic tracts

Question 5

Rexa Lamina V found…

Answer 5

All cord levels

Question 6

Reticular Formation found..

Answer 6

C1-C8

Question 7

Rexa Lamina VI

Answer 7

May be absent at some cord levels

Question 8

Rexa Lamina VII

Answer 8

1. Many descending tracts synapse here
2. Nucleus Dorsalis (C8-L3)
3. Intermediolateral Nucleus

Question 9

Rexa Lamina VIII

Answer 9

Medial aspect of anterior horn

Question 10

Rexa Lamina IX

Answer 10

Class A alpha motor neurons to skeletal muscle

Question 11

Rexa Lamina X

Answer 11

Central canal passes through
Ant gray commissure
Post gray commissure

Question 12

Tract that synapses on Lamina III, IV

Answer 12

Anterior spinothalamic

Question 13

Lamina V contains cell bodies that….

Answer 13

Send axons to contralateral spinothalamic tracts

Question 14

Lamina VI is the most…

Answer 14

Anterior aspect of dorsal horn

Question 15

Corticospinal tract fibers synapse with neurons in Lamina

Answer 15

VII

Question 16

Nucleus Dorsalis present in

Answer 16

C8-L3

Lamina VII

Question 17

Cell bodies in Nucleus Dorsalis contribute axons to

Answer 17

Posterior spinocerebellar tract

Question 18

Intermediolateral nucleus forms bulk of lateral horn cell bodies from..

Answer 18

T1-T12

Question 19

Preganglionic sympathetic neurons present in

Answer 19

T1-L2 of Intermediolateral Nucleus

Question 20

Preganglionic parasympathetic neurons present in

Answer 20

S2-S4 of intermediolateral nucleus

Question 21

Lamina VIII present in

Answer 21

Medial aspect of anterior horn