SC - Lamina

Question 1

Lamina I

Answer 1

Location: Tip of posterior horn

Sends information to the brain by the contralateral spinothalamic tract

F: Noxious and thermal stimuli

Question 2

Lamina II

Answer 2

L: SG

Sends info to Lamina III, and IV

F: Noxious and non-noxious sensation

Question 3

Lamina III

Answer 3

L: Partially NP

Connects with cells in layers IV, V, and VI

F: Proprioception and light touch
Connector from propriospinal/interneuron cells

Question 4

Lamina IV

Answer 4

L: Partially NP

Some of the cell’s project to the thalamus via the contralateral and ipsilateral spinothalamic tract
Connect with Lamina II

F: Involved in non-noxious sensory information relay and processing
Light touch

Question 5

Lamina V

Answer 5

L: Lamina II (dendrites)

Relays sensory information to the brain via the contralateral and spinothalamic tracts
Receives descending information from the brain via the corticospinal and rubrospinal tracts

F: receive nociceptive information from visceral organs
–> Clinical relevance ! Referred pain !

Question 6

Lamina VI

Answer 6

L: Cervical and lumbar enlargements

Receives sensory info from muscle spindles
Send information to the brain via ipsilateral spinocerebellar pathways

F: Participating in spinal reflexes
Involved in proprioception

Question 7

Lamina VII

Answer 7

L: Zona intermedia (IMN)
DNC is part of L VII

Lamina 2 and 6, visceral afferent fibers

F: Relays motor information to the viscera
Gives rise to cells involved in the autonomic system

Question 8

Lamina VIII

Answer 8

L: Base of the ventral horn

Descending vestibulospinal and reticulospinal fibers terminate

F: Cells are involved in modulating motor output to skeletal muscle