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Flashcards in Spinal Cord Deck (15):
1

2 Anterior Horn Enlargements

Cervical (C5-T1) for upper extremity
Lumbosacral (L1-S3) for lower

2

Somatotropic Distribution in Anterior Horn

Proximal innervation more medial

3

2 Ascending White Matter Tracts in Posterior Column

Fasciculus cuneatus - upper extremity, anything coming in above T6
Fasciculus gracilis - lower, coming in below

4

Lateral Horn Gray Matter Content

Intermediolateral cell column - pregang symp nerve bodies

5

4 Ascending Spinal Cord Tracts (2 lateral and 2 posterior)

Spinothalamic Tract
Spinocerebellar Tracts
Fasciculus cuneatus and gracilis

6

4 Descending Spinal Cord Anterior Column Tracts

Anterior corticospinal tract
Tectospinal Tract
Vestibulospinal tract
Reticulospinal tract

7

Spinothalamic Tract

Pain and temperature, synapse and cross in spinal cord so go up contralateral. Diff from gen sense which go up ipsi, so test w/ feather and pinprick

8

Spinocerebellar Tracts

Carry proprioceptive information

9

2 Descending Lateral Column Tracts

Rubrospinal tract
Corticospinal tract

10

(Lateral) Corticospinal tract

Volitional fibers from cortex that synapse on anterior horn to give lower motor neurons

11

Vestibulospinal tract

Vestibular system for balance

12

Reticulospinal Tract

Brings info to spinal cord about wakefulness and deals with autonomics. Not really sensory or motor

13

Tectospinal tract

Visual into upper SC so head moves correctly

14

Anterior corticospinal tract

Fibers that have branched off to innervate trunk musculature, similar (and can compensate for) to lateral corticospinal tract which does extremities

15

2 Contents of Intervertebral Discs

Nucleus pulposus and anulus fibrosus