SPINE CLINICAL

Question 1

Intermediolateral (sympathetic) cell column

Answer 1

T1-L2

Question 2

Sacral autonomic (parasympathetic) neurons

Answer 2

S2-S4

Question 3

lamination of nerve fibers in the spinothalamic tract

Answer 3

(sacral fibers lateral, cervical fibers medial),

Question 4

Dorsal Root Signs

Answer 4

diminution or loss of all sensory modalities (anesthesia) ipsilateral and in dermatomes supplied by the involved dorsal root(s)

Question 5

with bilateral diminution or loss of pain and temperature (sensory modalities that cross in the anterior white commissure) s

Answer 5

Anterior White Commissure Signs

Question 6

spared in ALS

Answer 6

brain stem controlling eye movements and sacral neurons controlling sphincter function

Question 7

Lesions in or around the central canal will encroach initially on the fibers conveying pain and temperature in the anterior white commissure

Answer 7

Syringomyelia

Question 8

early sphincter dysfunction, urinary incontinence, loss of voluntary emptying of the bladder, increased residual urine volume, and absent sensation of the urge to urinate. . Symmetric loss of sacral sensations (saddle anesthesia) along the distribution of S-2 to S-4 dermatomes is found.

Answer 8

Conus Medullaris Syndrome

Question 9

there is early occurrence of radicular pain in dermatomes supplied by the affected roots.Lower motor neuron–type paresis or paralysis occurs in muscles supplied by the affected nerves

Answer 9

Cauda Equina Syndrome

Question 10

early sphincter disturbance and symmetric loss of sacral sensations. Pain is unusual

Answer 10

Conus Medullaris Syndrome