Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
two-way impulse conduction pathway and reflex center |
Spinal Cord |
|
|
number of pairs of spinal nerves |
31 |
|
|
ventral, lateral, and dorsal horns |
gray matter |
|
|
mainly contain somatic motor neurons |
Ventral Horns |
|
|
contain interneurons |
dorsal horns |
|
|
contain visceral (autonomic) motor neurons |
lateral horns |
|
|
dorsal, lateral, and ventral columns (funiculi) |
White matter |
|
|
include the fasciculi gracilis and cuneatus, spinothalamic tracts, and spinocerebella tracts |
ascending (sensory) tracts |
|
|
transmits pain, temperature, and coarse touch, and permit brain stem processing of ascending impulses |
spinothalamic pathways |
|
|
serve muscle sense, not conscious sensory perception |
spinocerebellar tracts |
|
|
injury to the ventral horn neurons or the ventral roots |
flaccid paralysis |
|
|
injury to the upper motor neurons |
spastic paralysis |
|
|
damage to the dorsal roots or sensory tracts |
paresthesias occur |
|
|
inflammation and destruction of the ventral horn neurons by the poliovirus |
poliomyelitits |
|
|
destruction of the ventral horn neurons and the pyramidal tracts |
amyotrophic lateral sclerosis (ALS) |
|
|
Develops from the rostral part of the embryonic neural tube |
brain |
|
|
Develops from the caudal part of the embryonic neural tube |
spinal cord |
